Tamilnadu Board Science Question papers for 9th Standard (English Medium) Question paper & Study Materials

9th Standard Science - Organization of Tissues Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    The tissue composed of living thin walled polyhedral cell is

  • 2)

    Aerenchyma is found in

  • 3)

    Unstriated muscles are found in

  • 4)

    Smooth muscles occur in

  • 5)

    Tendon connects

9th Science - Acids, Bases and Salts Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    Zn + 2HCI \(\longrightarrow \) ZnCl2 + ____\(​​​​\uparrow \)(H2' 02' CO2)

  • 2)

    Acids in plants and animals are organic acids. Whereas acids in rocks and minerals are_________

  • 3)

    Since metal carbonate and metal bicarbonate are basic they react with acids to give salt and water with the liberation of__________

  • 4)

    The nature of the tooth paste commonly used is in nature

  • 5)

    The hydrated salt of copper sulphate has______colour

9th Science - Term 2 Parts of Computer Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    Bring out any two differences between input and output devices

  • 2)

    What is input devices?

  • 3)

    Write the example of input and output devices of a computer system

  • 4)

    What is keyboard?

  • 5)

    Explain CPU.

9th Standard Science - Term 3 Fluids Three Marks - by Jai - Hosur View & Read

  • 1)

    On what factors the pressure exerted by the liquid depends on?

  • 2)

    Why does a helium balloon float in air?

  • 3)

    Why it is easy to swim in river water than in sea water?

  • 4)

    What is meant by atmospheric pressure?

  • 5)

    State Pascal’s law.

9th Standard Science - Term 3 Sound Three Marks - by Jai - Hosur View & Read

  • 1)

    Name the device which is used to produce sound in laboratory experiments.

  • 2)

    Through which medium sound travels faster, iron or water? Give reason.

  • 3)

    What should an object do to produce sound?

  • 4)

    Can sound travel through vacuum?

  • 5)

    Name the physical quantity whose SI unit is ‘hertz’. Define.

9th Standard Science - Term 3 Universe Three Marks - by Jai - Hosur View & Read

  • 1)

    What is Big bang theory?

  • 2)

    What is dark matter and dark energy?

  • 3)

    Write a note on outer planets?

  • 4)

    What are meteors and meteorites?

  • 5)

    What is the purpose of ISS?

9th Standard Science - Term 3 Carbon and its Compounds Three Marks - by Jai - Hosur View & Read

  • 1)

    Differentiate graphite and diamond

  • 2)

    What are saturated and unsaturated compounds called?

  • 3)

    Carbon do not form ionic compounds. Why?

  • 4)

    What is the valency of carbon in carbon monoxide?

  • 5)

    Why are one-time use and throwaway plastics harmful?

9th Standard Science - Term 3 Economic Biology Three Marks - by Jai - Hosur View & Read

  • 1)

    What are secondary metabolites?

  • 2)

    What do you know about AYUSH?

  • 3)

    What are the types of vegetable garden?

  • 4)

    Mention any two mushroom preservation methods.

  • 5)

    Why do we call Haryana and Kankrej breed of cattle as dual purpose breeds?

9th Standard Science - Term 3 World of Microbes Three Marks - by Jai - Hosur View & Read

  • 1)

    Distinguish between Virion and Viroid.

  • 2)

    A baby is suffering from diarrhoea, while other babies in the same locality do not. Mention the possible causes that you think. What would be the possible solutions for this?

  • 3)

    Name the vector of the malarial parasite. Mention the species of malarial parasite which cause malignant and fatal malaria.

  • 4)

    What is triple antigen? Mention the disease which can be prevented by using the antigen.

  • 5)

    Sanjay had an attack of chicken pox and has just recovered. The health officer of his locality says that the disease would not occur again for him. What would be the reason for this?

9th Standard Science - Term 2 Organ Systems in Animals Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    Define the following terms:
    a. Digestion
    b. Osmoregulation
    c. Emulsification
    d. Ovulation

  • 2)

    Name the types of teeth present in an adult human being. Mention the functions of each.

  • 3)

    What are the end products of digestion of starch, proteins and fats respectively?

  • 4)

    Explain the structure of nephron.

  • 5)

    Differentiate the following terms:
    a. Excretion and secretion
    b. Absorption and assimilation
    c. Sperm and ovum
    d. Ingestion and egestion
    e. Diphyodont and heterodont
    f. Incisors and canines

9th Standard Science - Term 3 Environmental Science Three Marks - by Jai - Hosur View & Read

  • 1)

    What are the two factors of biosphere?

  • 2)

    How do human activities affect nitrogen cycle?

  • 3)

    What is adaptation?

  • 4)

    What are the challenges faced by hydrophytes in their habitat?

  • 5)

    Identify the given plant. How does it adapt itself to its habitat?

9th Standard Science - Term 2 Organization of Tissues Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    What are intercalary meristems? How do they differ from other meristems?

  • 2)

    How would you differentiate between meristematic and permanent tissue?

  • 3)

    Which tissue is the main component of tendons and ligaments? How do they differ in function?

  • 4)

    What are the fibres present in the matrix of loose connective tissue?

  • 5)

    How are collagen fibres organized in dense connective tissues

9th Standard Science - Term 2 Acids, Bases and Salts Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    What are organic acids? Given examples?

  • 2)

    How are acids classified based on ionisation? Give examples

  • 3)

    What is Aquaregia? Mention its uses

  • 4)

    What does acidity of base mean?

  • 5)

    What is Potash alum? Write its formula

9th Standard Science - Term 2 Chemical Bonding Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    What is chemical bond?

  • 2)

    Write the basic concept of Kossel - Lewis theory

  • 3)

    Define ionic bond

  • 4)

    What is covalent bond?

  • 5)

    Name of the following:
    (a) An element which obtains the noble gas configuration of neon by losing three electrons.
    (b) An element which gains two electrons to obtain noble gas configuration of Neon.

9th Standard Science - Term 2 Magnetism and Electromagnetism Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    State an important advantage of ac over dc.

  • 2)

    A portable radio has a built in transformer so that if can work from the mains instead of batteries. Is this a step up or step down transformer?

  • 3)

    Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer. While coil B is connected to a battery through a key. What would happen if
    (i) a current is passed through coil B by plugging the key?
    (ii) the current is stopped by removing the plug from the key?

  • 4)

    State Faraday’s laws of electromagnetic induction.

  • 5)

    Can two magnetic lines of force intersect? Justify your answer

9th Science - Term 2 Electric Charge and Electric Current Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    State Ohm’s law.

  • 2)

    On what factor does the resistance of a wire depend at a particular temperature?

  • 3)

    Name any two appliances which work under the principle of heating effect of current.

  • 4)

    Calculate the amount of charge that would flow in 2 hours through an element of an electric bulb drawing a current of 2.5A.

  • 5)

    The values of current I flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?

    I (ampere) 0.5 1.0 2.0 3.0 4.0
    V (volt) 1.6 3.4 6.7 10.2 13.2

    [Hint: plot V-I a graph and take slope]

     

9th Science - Term 2 Heat Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    How does the water kept in an earthen pot remain cool?

  • 2)

    Define specific latent heat capacity

  • 3)

    What could be the final temperature of a mixture of 100 g of water at 90ºC and 600g of water at 20ºC.

  • 4)

    Why are burns caused by steam more painful than those caused by boiling water at the same temperature?

  • 5)

    What is the amount of heat required to raise the temperature of 5 kg of iron from 30°C to 130°C? Specific heat capacity of iron = 483 Jkg-1C-1.

9th Standard Science - Chemical bonding Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    Number of valence electrons in carbon is

  • 2)

    Atoms having 1,2 or 3 electrons in its valence shell will readily form_____________

  • 3)

    Bond formed between a metal and non-metal atom is usually____________

  • 4)

    Covalent bond is formed by_________

  • 5)

    Elements with stable electronic configurations have eight electrons in their valence shell. They are__________

9th Standard Science - Periodic classification of elements Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    If Dobereiner is related with 'law of triads', then Newlands is related with
     

  • 2)

    Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their__________

  • 3)

    If the electronic configuration of an element is 1s2 2S2 2p6 3s2 3p1, then it will occupy___________ block of the periodic table.

  • 4)

    The maximum number of electrons that can be accommodated in s, p ,d, and f subshells are__________

  • 5)

    Which block of the periodic table contains metals, non-metals and metalloids?

9th Science - Term 1 Health and Hygiene - Food for living 3 Marks Questions - by Jai - Hosur View & Read

  • 1)

    Write any one function of the following minerals
    a) Calcium   b) Sodium
    c) Iron          d) Iodine

  • 2)

    Explain any two methods of food preservation.

  • 3)

    Sanjana wants to buy a jam bottle in a grocery shop. What are the things she should observe on the label before purchasing it

  • 4)

    Give one reason for the following statements:
    a. Salt is added as a preservative in pickles___________
    b. We should not eat food items beyond the expiry date ______________
    c. Deficiency of calcium in diet leads to poor skeletal growth ___________

  • 5)

    What are the effects of consuming adulterated food?

9th Science - Term 1 Living World of Animals - Diversity in Living Organism - Kingdom Animalia 3 Marks Questions - by Jai - Hosur View & Read

  • 1)

    Give an account on phylum Annelida.

  • 2)

    List the excretory organs of invertebrates in relation to their habitats.

  • 3)

    How is the body wall of coelenterates arranged?

  • 4)

    Differentiate between flat worms and round worms?

  • 5)

    List five characteristic features of fishes.

9th Science - Term 1 Living World of Plants - Plant Physiology Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    Explain the types of tropisms

  • 2)

    Give an account of phototropism.

  • 3)

    Write a brief note on types of nastic movements.

  • 4)

    Briefly, explain nastic movements

  • 5)

    How will you prove that shoots bent towards light? (OR) Experiment to demonstrate phototropism.

9th Science - Term 1 Matter around us Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    Why are gases easily compressible whereas solids are incompressible?

  • 2)

    Hold a ‘smiley ball’ and squeeze it. Can you compress it? Justify your answer?

  • 3)

    Which of the following are pure substances? Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.

  • 4)

    Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?

  • 5)

    What is an adsorbate and adsorbent?

9th Science - Term 1 Atomic Structure 3 Marks Questions - by Jai - Hosur View & Read

  • 1)

    Methane burns in oxygen to form carbon dioxide and water vapour as given by the equation
    CH4(g) + 2O2(g) ➝ CO2(g)+ 2H2O(g)
    Calculate: (i) the volume of oxygen needed to burn completely 50 cm3 of methane and (ii) the volume of carbon dioxide formed in this case.

  • 2)

    An atom has 11 protons, 11 electrons and 12 neutrons. What is the atomic number and the name of the element?

  • 3)

    Calculate the atomic number of an element whose mass number is 39 and number of neutrons is 20. Also find the name of the element

  • 4)

    State the law of multiple proportions

  • 5)

    List the uses of isotopes?

9th Science - Term 1 Light Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    An object 2 cm high is placed at a distance of 16 cm from a concave mirror which produces a real image 3 cm high. Find the position of the image.

  • 2)

    a) Complete the diagram to show how a concave mirror forms the image of the object.
    b) What is the nature of the image?

  • 3)

    Pick out the concave and convex mirrors from the following and tabulate them
    Rear-view mirror, Dentist’s mirror, Torch-light mirror, Mirrors in shopping malls, Make-up mirror.

  • 4)

    State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.

  • 5)

    What is meant by magnification? Write its expression. What is its sign for the
    a) real image b) virtual image

9th Science - Term 1 Motion Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    A sound is heard 5 s later than the lightning is seen in the sky on a rainy day. Find the distance of location of lightning? Given the speed of sound = 346 ms-1

  • 2)

    A 900 kg car moving at 10 ms-1 takes a turn around a circle with a radius of 25 m. Determine the acceleration and the net force acting upon the car.

  • 3)

    Compare speed and velocity?

  • 4)

    Why did the actual speed differ from average speed?

  • 5)

    Mention the uses of velocity–time graph

9th Science - Term 1 Measurement and Measuring Instruments Three Marks Questions - by Jai - Hosur View & Read

  • 1)

    Write the rules that are followed in writing the symbols of units in SI system.

  • 2)

    Write the need of a standard unit

  • 3)

    Differentiate mass and weight

  • 4)

    What is the measuring unit of the thickness of a plastic carry bag?

  • 5)

    How will you measure the least count of vernier caliper ?

9th Science - Electric Charge and Electric Current Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    Rubbing of comb with hair

  • 2)

    In an electrolyte the current is due to the flow of

  • 3)

    The following is not a safety device.

  • 4)

    In India the frequency of alternating current is

  • 5)

    The resistance of a straight conductor is independent of__________

9th Standard Science - Magnetism and Electromagnetism Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    Which of the following converts electrical energy into mechanical energy?

  • 2)

    The part of the AC generator that passes the current from the armature coil to the external circuit is

  • 3)

    Transformer works on.

  • 4)

    The unit of magnetic flux density is

  • 5)

    The direction of magnetic field around a straight conductor carrying current can be determined by____________

9th Standard Science - Electric Charge and Electric Current Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    In current electricity, a positive charge refers to,

  • 2)

    Potential near a charge is the measure of its________ to bring a positive charge at that point

  • 3)

    Electroplating is an example for

  • 4)

    In India the frequency of alternating current is

  • 5)

    Electrons move from__________ potential __________to potential

9th Standard Science - Heat Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    Calorie is the unit of

  • 2)

    The specific heat capacity of water is

  • 3)

    A device in which the loss of heat due to conduction, convection and radiation is minimized is

  • 4)

    The temperature at which a liquid gets converted into its vapour state is called its________

  • 5)

    Which one of the following scales has lower fixed point at 0°C?

9th Standard Science - Term 3 Economic Biology Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Define 
    a. Pisiculture
    b. Apiculture
    c. Vermiculture
    d. Mariculture
    e. Floriculture
    f. Compost
    g. Pomiculture
    h. Pinning

  • 2)

    Define Apiculture

  • 3)

    Define Vermiculture

  • 4)

    Define Mariculture

  • 5)

    Define Floriculture

9th Standard Science - Term 2 Organ Systems in Animals Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Arrange the following five steps of nutrition in correct sequence: (digestion, assimilation, ingestion, egestion, absorption)

  • 2)

    The stomach secretes gastric juice, which contains hydrochloric acid. What is its function?

  • 3)

    How is the small intestine designed to absorb digested food?

  • 4)

    Why do we sweat?

  • 5)

    State any two vital functions of human kidney.

9th Standard Science - Term 2 Organization of Tissues Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Name the components of xylem and phloem.

  • 2)

    Name tissue that stores fat in our body.

  • 3)

    Name the tissue present in the brain.

  • 4)

    What is plate meristem?

  • 5)

    Differentiate Collenchyma and Sclerenchyma

9th Standard Science - Term 2 Acids, Bases and Salts Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Non-metallic oxides are acidic is nature.

  • 2)

    Complete the equation HCl+ H2⟶ H3O+ +Cl-

  • 3)

    Complete the equation H+ +H2⟶ ?

  • 4)

    Complete the equation Mg+? ⟶ ?+H2

  • 5)

    Complete the equation Na2CO3+2HCl ⟶ ?+? +CO2

9th Standard Science Term 2 Periodic classification of elements Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    State modern periodic law.

  • 2)

    What are s-block elements?

  • 3)

    What are p-block elements?

  • 4)

    What are alloys?

  • 5)

    What are metalloids? Give examples

9th Science - Term 2 Magnetism and Electromagnetism Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Define magnetic flux density

  • 2)

    Draw and label the diagram of an AC generator.

  • 3)

    Define the terms magnet and magnetism.

  • 4)

    Define natural magnet

  • 5)

    Define artificial magnet

9th Standard Science Living World of Animals - Diversity in Living Organism - Kingdom Animalia Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Which organism is called as Friend of farmers? Why?

  • 2)

    List the respiratory organs of amphibians.

  • 3)

    Differentiate between tube feet and false feet.

  • 4)

    What are the sub-phylum of prochordates?

  • 5)

    Why are frogs said to be amphibians?

9th Science - Computer – An Introduction Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Write a note on ENIAC.

  • 2)

    Who is the father of modern computer?

  • 3)

    Who was the first programmer?

  • 4)

    What are the forms of computer?

  • 5)

    How computer generations are categorised?

9th Science - Term 2 - Heat Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    What is the heat in joules required to raise the temperature of 25 grams of water from 0ºC to 100ºC? What is the heat in Calories?
    (Specific heat of water = 4.18 J/gºC)

  • 2)

    How much heat energy is required to change 2 kg of ice at 0ºC into water at 20ºC? (Specific latent heat of fusion of water = 3,34,000J/kg, Specific heat capacity of water = 4200JKg-1K-1).

  • 3)

    Heat gained by a body depends upon which factors?

  • 4)

    What do you mean by thermal equilibrium?

  • 5)

    Define latent heat of fusion?

9th Science - Term 2 - Electric Charge and Electric Current Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    On what factors does the electrostatic force between two charges depend?

  • 2)

    What are electric lines of force?

  • 3)

    Define electric field.

  • 4)

    Define electric current and give its unit.

  • 5)

    A bird sitting on a high power electric line is still safe. How?

9th Science - Living World of Plants - Plant Physiology Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Give an example for a plant whose leaf shows a mesmerizing movement.

  • 2)

    Write the scientific terms used to represent the following:
    a) Growing of roots towards the gravity.
    b) Bending of roots towards the water.

  • 3)

    Give the technical terms for the following:
    a) Growth dependent movement in plants.
    b) Growth independent movement in plants.

  • 4)

    Study the pictures below and then complete the table by putting a plus (+) if the shoot or root grows towards the stimulus and a minus (-) if it grows away from it.

    Stimulus Light Gravity
    Shoot + -
    Root ? +

  • 5)

    Name the movement seen in Pneumatophores of Avicennia

9th Science - Health and Hygiene - Food for living Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Differentiate : Macronutrients from micronutrients

  • 2)

    What is an adulterant?

  • 3)

    A doctor advices an adolescent girl who is suffering from anaemia to include more of leafy vegetables and dates in her diet. Why so?

  • 4)

    What are the symptoms or Dermatitis?

  • 5)

    Mention the fat soluble vitamins.

9th Science - Term 1 Model Question Paper - by Preetha - Cuddalore View & Read

  • 1)

    1 metric ton is equal to

  • 2)

    Slope of the velocity - time graph gives

  • 3)

    The field of view * is maximum for ________ 

  • 4)

    When we mix a drop of ink in water we get a__________

  • 5)

    The correct electronic configuration of potassium is

9th Standard Science - Atomic Structure Two Marks Question - by Jai - Hosur View & Read

  • 1)

    Name an element which has the same number of electrons in its first and second shell

  • 2)

    Write the electronic configuration of K+ and Cl

  • 3)

    Copy the following and write the names of the laws and their simple definitions in the space provided.

  • 4)

    What is combination reaction ?

  • 5)

    What are the limitations of Rutherford's model?

9th Science - Matter around us Two Marks Question - by Jai - Hosur View & Read

  • 1)

    How gaseous pressure arises?

  • 2)

    Define Sublimation

  • 3)

    A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?

  • 4)

    Name the method you would adopt to separate a mixture of ammonium chloride and common salt.

  • 5)

    You have just won a medal made of 22-carat gold.Have you just procured a pure substance or impure substance?

9th Science - Light Two Marks Question - by Jai - Hosur View & Read

  • 1)

    Give two examples of transparent medium that are denser than air

  • 2)

    According to cartesion sign convention, which mirror and which lens has negative focal length?

  • 3)

    Copy this figure in your answer book and show the direction of the light ray after reflection

  • 4)

    When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?

  • 5)

    What do you conclude about the speed of light in diamond if you are told that the refractive index of diamond is 2.41?

9th Science - Motion Two Marks Question - by Jai - Hosur View & Read

  • 1)

    A cyclist turning a corner leans inwards. Why?

  • 2)

    Define the terms rest and motion.

  • 3)

    What are the different types of motion?

  • 4)

    Define distance.

  • 5)

    Define displacement.

9th Science - Measurement and Measuring Instruments Two Marks Questions - by Jai - Hosur View & Read

  • 1)

    Define measurement

  • 2)

    Define least count of any device

  • 3)

    What do you know about pitch of screw gauge?

  • 4)

    Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?

  • 5)

    Convert : 300 K into Celsius scale,

9th Science - Term 1 Five Mark Model Question Paper - by Jai - Hosur View & Read

  • 1)

    Explain a method to find the thickness of a hollow tea cup.

  • 2)

    Calculate the diameter of the sphere which is shown in the Figure  Assume the scale has no zero error

     

  • 3)

    Derive the three equations of motion by graphical method

  • 4)

    Find the size, nature and position of image formed when an object of size 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm.

  • 5)

    State and verify laws of refraction using a glass slab

9th Science - Hardware and Software Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Find out the part that is not found in CPU?

  • 2)

    LINUX is a

  • 3)

    Find out the Paid and Proprietary software from the given list

  • 4)

    _________is an Operating System.

  • 5)

    MAC OS

9th Science -World of Microbes Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Mycology is the branch of biology that deals with the study of

  • 2)

    Bacteria involved in curd formation is

  • 3)

    Syphilis is caused by

  • 4)

    Which one of the following is a pair of viral disease?

  • 5)

    First antibiotic ______________ was developed by ______________.

9th Science - Economic Biology Book Back Questions - by Jai - Hosur View & Read

  • 1)

    The production and management of fish is called

  • 2)

    Which one of the following is not an Indian major carp?

  • 3)

    Which one of the following is refered as red worms?

  • 4)

    __________ is the method of growing plants without soil.

  • 5)

    _________ is a nodulating type of micro organism associating symbiotically with the root of legume plants.

9th Science - Environmental Science Book Back Questions - by Jai - Hosur View & Read

  • 1)

    All the factors of biosphere which affect the ability of organisms to survive and reproduce are called as _______________.

  • 2)

    Increased amount of ___________ in the atmosphere, results in greenhouse effect and global warming

  • 3)

    In some xerophytes, leaves are modified into spines as an adaptation ________________.

  • 4)

    Specific constituents such as nitrogen, phosphorus, suspended solids and heavy metals found in the wastewater are removed during ___________ treatment of water recycling process.

  • 5)

    Nitrogen is a greenhouse gas

9th Science - Applied Chemistry Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Which of the following does not contain natural dyes?

  • 2)

    The groups responsible for the colour of an organic compound is called

  • 3)

    Chlorinated hydrocarbons are used as

  • 4)

    ____________ is an electrochemical cell which converts electrical energy into chemical change(Reaction).

  • 5)

    Aspirin is an _____________

9th Standard Science - Carbon and its Compounds Book Back Questions - by Jai - Hosur View & Read

  • 1)

    A phenomenon in which an element exists in different modification in same physical state is called

  • 2)

    The carbon atoms in fullerene are arranged in mixed

  • 3)

    Raagav brings his lunch every day to school in a plastic container which has resin code number 5. The container is made of

  • 4)

    Which of the following plastic items are banned by the Government of Tamil Nadu as of 1st January 2019?

  • 5)

    Graphite is used as lubricant in machines because

9th Standard Science - Universe Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Who proposed the heliocentric model of the universe?

  • 2)

    The period of revolution of planet A around the Sun is 8 times that of planet B. How many times is the distance of planet A as great as that of planet B?

  • 3)

    The Big Bang occurred ________ years ago.

  • 4)

    The speed of Sun in km/s is _______.

  • 5)

    India’s first satellite is _______.

9th Standard Science - Sound Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

  • 2)

    Which of the following statement best describes frequency?

  • 3)

    In the sound wave produced by a vibrating turning fork as shown in the diagram, half the wave length is represented by:

  • 4)

    When the pitch of note by a harmonium is lowered, then the wave length of the note

  • 5)

    The velocities of sound waves in four media P, O, Q, R and S are 18,00 km/h, 900 km/h, 0 km/h, and 1200 km/h respectively. Which could be a liquid medium?

9th Standard Science - Fluids Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Clouds float in atmosphere because of their low

  • 2)

    In a fluid, buoyant force exists because pressure at the ____________ of an object is greater than the pressure at the top.

  • 3)

    The instrument used to measure atmospheric pressure is _____________.

  • 4)

    A drinking straw works on the existence of _________.

  • 5)

    The weight of fluid displaced determines the buoyant force on an object.

9th Standard Science - Parts of Computer Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Which one of the following is an output device?

  • 2)

    Name the cable that connects CPU to the monitor.

  • 3)

    Which one of the following is an example for wireless connections?

  • 4)

    Pen drive is _______device.

  • 5)

    VGA

9th Standard Science - Organ Systems in Animals Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Which of the following is not a salivary gland?

  • 2)

    The structural and functional unit of the kidney is__________

  • 3)

    The common passage meant for transporting urine and sperms in male is___________

  • 4)

    Which of the following is not a part of female reproductive system?

  • 5)

    The opening of the stomach into the intestine is called_________

9th Standard Science - Organization of Tissues Book Back Questions - by Jai - Hosur View & Read

  • 1)

    A meristematic tissue consists of

  • 2)

    Which of the following is a complex tissue?

  • 3)

    Unstriated muscles are found in

  • 4)

    Smooth muscles occur in

  • 5)

    The___________ tissues are made up of more than one type of cells and these wok together as a unit

9th Science - Acids, Bases and Salts Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Zn + 2HCI \(\longrightarrow \) ZnCl2 + ____\(​​​​\uparrow \)(H2' 02' CO2)

  • 2)

    Apple contains malic acid. Orange contains_______

  • 3)

    pH value of human blood is_________

  • 4)

    The nature of the tooth paste commonly used is in nature

  • 5)

    You are given pure water to test the pH value using pH paper. It shows colour

9th Science - Chemical Bonding Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Number of valence electrons in carbon is

  • 2)

    ____________compounds have high melting and boiling points.

  • 3)

    Oxidising agents are also called as____________because they remove electrons form other substances.

  • 4)

    Elements with stable electronic configurations have eight electrons in their valence shell. They are__________

  • 5)

    The property which is characteristics of an Ionic compound is that

9th Science - Periodic classification of elements Book Back Questions - by Jai - Hosur View & Read

  • 1)

    If Dobereiner is related with 'law of triads', then Newlands is related with
     

  • 2)

    Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their__________

  • 3)

    Elements in the modern periodic table are arranged in__________ groups and __________ periods.

  • 4)

    The increasing order of the energy of subshells is

  • 5)

    If the electronic configuration of an element is 1s2 2S2 2p6 3s2 3p1, then it will occupy___________ block of the periodic table.

9th Science - Magnetism and Electromagnetism Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Which of the following converts electrical energy into mechanical energy?

  • 2)

    An electric generator converts

  • 3)

    The unit of magnetic flux density is

  • 4)

    No force acts in a current carrying conductor when it is ________o the magnetic field.

  • 5)

    Devices which is used to convert high alternating current to low alternating current

9th Science - Electric Charge and Electric Current Book Back Questions - by Jai - Hosur View & Read

  • 1)

    In current electricity, a positive charge refers to,

  • 2)

    Electroplating is an example for

  • 3)

    Resistance of a wire depends on

  • 4)

    In India the frequency of alternating current is

  • 5)

    Electrons move from__________ potential __________to potential

9th Science Unit 10 Heat Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Calorie is the unit of

  • 2)

    In which mode of transfer of heat, molecules pass on heat energy to neighbouring molecules without actually moving from their positions?

  • 3)

    A device in which the loss of heat due to conduction, convection and radiation is minimized is

  • 4)

    The fastest mode of heat transfer is______________

  • 5)

    During day time, air blows from________________to_____________

9th Science Unit 9 Computer – An Introduction Book Back Questions - by Jai - Hosur View & Read

  • 1)

    ____________ is an electronic device which stores data and information

  • 2)

    _________ belongs to the generation IV of the computer

  • 3)

    Data processing involves________ steps

  • 4)

    1. Abacus belongs to the first generation of the computer
    2. ENIAC was used in the American military

  • 5)

    III generation computer

9th Science Unit 8 Health and Hygiene - Food for Living Book Back Questions - by Jai - Hosur View & Read

  • 1)

    The nutrient required in trace amounts to accomplish various body functions is _______________

  • 2)

    The sprouting of onion and potatoes can be delayed by the process of _______________

  • 3)

    Deficiency diseases can be prevented by taking _______________ diet.

  • 4)

    The process of affecting the natural composition and the quality of food substance is known as _______________

  • 5)

    Do not purchase food beyond the date of _______________

9th Standard Science - Living World of Animals - Diversity in Living Organism - Kingdom Animalia Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Which is not an insect?

  • 2)

    Mesoglea is present in

  • 3)

    Which is not a feature of chordates

  • 4)

    Hermaphrodite organisms are

  • 5)

    Poikilothermic organisms are

9th Standard Science Unit 6 Living World of Plants - Plant Physiology Book Back Questions - by Jai - Hosur View & Read

  • 1)

    A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

  • 2)

    The tropic movement that helps the climbing vines to find a suitable support is ________. 

  • 3)

    The chemical reaction occurs during photosynthesis is ________. 

  • 4)

    The plant part which exhibits negative geotropism is __________.

  • 5)

    The non-directional movement of a plant part in response to temperature is called ________.

9th Standard Science - Atomic Structure Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Among the following the odd pair is

  • 2)

    Change in the number of neutrons in an atom changes it to

  • 3)

    The number of protons, neutrons and electrons present respectively in \(_{ 35 }^{ 80 }{ Br }\)

  • 4)

    Calcium and Argon are examples of a pair of __________

  • 5)

    _________isotope is used in the treatment of goiter

9th Standard Science - Light Book Back Questions - by Jai - Hosur View & Read

  • 1)

    The focal length of a concave mirror is 5cm. Its radius of curvature is

  • 2)

    The speed of light is maximum in

  • 3)

    Which of the following statements about total internal reflection is true?

  • 4)

    A spherical mirror whose reflecting surface is curved outwards is called ___________ mirror

  • 5)

    All distances parallel to the principal axis are measured from the ____________ of the mirror

9th Standard Science - Matter around us Book Back Questions - by Jai - Hosur View & Read

  • 1)

    The physical state of water at 373 K is

  • 2)

    When we mix a drop of ink in water we get a__________

  • 3)

    Filtration method is effective in separating _______ mixture

  • 4)

    1500C = __________ K

  • 5)

    An example of a substance that sublimes is ________

9th Standard Science Unit 2 Motion Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Slope of the velocity - time graph gives

  • 2)

    A car is being driven at a speed of 20 ms-1 when brakes are applied to bring it to rest in 5 s. The decelaration produced in this case will be

  • 3)

    Which one of the following is most likely not a case of uniform circular motion?

  • 4)

    The force responsible for drying of clothes in a washing machine is

  • 5)

    Speed is a ____________ quantity whereas velocity is a ____________ quantity

9th Standard Science Unit 1 Measurement and Measuring Instruments Book Back Questions - by Jai - Hosur View & Read

  • 1)

    Rulers, measuring tapes and metre scales are used to measure

  • 2)

    1 metric ton is equal to

  • 3)

    Distance between Chennai and Kanyakumari can be found in

  • 4)

    Which among the following is not a device to measure mass

  • 5)

    The thickness of a cricket ball is measured by _______

9th Standard Science - Computer – An Introduction One Mark Question with Answer Key - by Jai - Hosur View & Read

  • 1)

    ____________ is an electronic device which stores data and information

  • 2)

    _________ belongs to the generation IV of the computer

  • 3)

    Data processing involves________ steps

  • 4)

    1. Abacus belongs to the first generation of the computer
    2. ENIAC was used in the American military

  • 5)

    III generation computer

9th Standard Science - Health and Hygiene - Food for living One Mark Question and Answer - by Jai - Hosur View & Read

  • 1)

    The nutrient required in trace amounts to accomplish various body functions is _______________

  • 2)

    The physician who discovered that scurvy can be cured by ingestion of citrus fruits is  ______________

  • 3)

    The sprouting of onion and potatoes can be delayed by the process of _______________

  • 4)

    Reproductive abnormalities are due to the deficiency of vitamin _______

  • 5)

    The temperature required for deep freezing is ______

9th Science - Living World of Animals - Diversity in Living Organism - Kingdom Animalia One Mark Question and Answer - by Jai - Hosur View & Read

  • 1)

    Which is not an insect?

  • 2)

    Mesoglea is present in

  • 3)

    Identify the single celled organism.

  • 4)

    How many organisms given below show radial symmetry? Earthworms, grasshopper, rotifers jelly fish and star fish__________.

  • 5)

    Consider the following four statements whether they are correct or wrong for the classification of animal kingdom.

9th Standard Chapter 4 Matter Around Us - One Mark Question and Answer - by Jai - Hosur View & Read

  • 1)

    The physical state of water at 373 K is

  • 2)

    When we mix a drop of ink in water we get a__________

  • 3)

    ______ is essential to perform separation by solvent extraction method.

  • 4)

    Gas particles can be forced to get closer and can be easily compressed.So_______increases.

  • 5)

    Light,sound,heat,etc.are not matter.They are different forms of

9th Standard Chapter 5 Atomic Structure One Mark Question and Answer - by Jai - Hosur View & Read

  • 1)

    Among the following the odd pair is

  • 2)

    The term nucleons refer to

  • 3)

    The correct electronic configuration of potassium is

  • 4)

    Law of multiple proportions was proposed by _________

  • 5)

    2H2 + 02 \(\longrightarrow \)2H20. This is a___________ reaction.

9th Science Chapter 6 Living World of Plants - Plant Physiology One Mark Question with Answer - by Jai - Hosur View & Read

  • 1)

    A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

  • 2)

    The bending of root of a plant in response to water is called _________ 

  • 3)

    Desmodium gyrans is commonly known as_______________.

  • 4)

    Mimosa pudica is also known as__________________.

  • 5)

    The tip of the shoot is known as_______________.

9th Science Chapter 3 Light - One Mark Question Paper with Answer Key - by Jai - Hosur View & Read

  • 1)

    The field of view * is maximum for ________ 

  • 2)

    When a ray of light passes from one medium to another medium, refraction takes place when angle of incidence is

  • 3)

    _________ is used as reflectors in torchligh

  • 4)

    The focal length of a concave mirror is 5cm. Its radius of curvature is

  • 5)

    When a beam of white light passes through a prism it gets

9th Science Chapter 2 Motion One Mark Question Paper - by Jai - Hosur View & Read

  • 1)

    Slope of the velocity - time graph gives

  • 2)

    The area under velocity – time graph represents

  • 3)

    A car is being driven at a speed of 20 ms-1 when brakes are applied to bring it to rest in 5 s. The decelaration produced in this case will be

  • 4)

    Unit of acceleration is

  • 5)

    Which one of the following is most likely not a case of uniform circular motion?

9th Science Measurement and Measuring Instruments One Mark Question Paper - by Jai - Hosur View & Read

  • 1)

    Choose the correct one

  • 2)

    Rulers, measuring tapes and metre scales are used to measure

  • 3)

    1 metric ton is equal to

  • 4)

    Distance between Chennai and Kanyakumari can be found in

  • 5)

    Which among the following is not a device to measure mass

9th Science Heat Model Question Paper - by Jai - Hosur View & Read

  • 1)

    Calorie is the unit of

  • 2)

    Two cylinders of equal height and radius are made of copper and aluminium. Which of them conducts heat faster?

  • 3)

    In which mode of transfer of heat, molecules pass on heat energy to neighbouring molecules without actually moving from their positions?

  • 4)

    The temperature at which a liquid gets converted into its vapour state is called its________

  • 5)

    Which one of the following scales has lower fixed point at 0°C?

9th Standard Science Term 1 Model Question Paper - by Jai - Hosur View & Read

  • 1)

    1 metric ton is equal to

  • 2)

    Slope of the velocity - time graph gives

  • 3)

    When a ray of light passes from one medium to another medium, refraction takes place when angle of incidence is

  • 4)

    Among the following______is a mixture

  • 5)

    Mesoglea is present in

9th Standard Science Term 1 Model Question Paper - by Jai - Hosur View & Read

  • 1)

    Choose the correct one

  • 2)

    Which of the following graph represents uniform motion of a moving particle

  • 3)

    When a ray of light passes from one medium to another medium, refraction takes place when angle of incidence is

  • 4)

    Among the following______is a mixture

  • 5)

    Dysentery is caused by

9th Standard Science Term 1 Five Marks Model Question Paper - by Jai - Hosur View & Read

  • 1)

    Find the mass of an object weighing 98 N.

  • 2)

    During an experiment, a signal from a spaceship reached the ground station in five seconds. What was the distance of the spaceship from the ground station? The signal travels at the speed of light that is 3 × 108 ms-1 ?

  • 3)

    Derive the three equations of motion by graphical method

  • 4)

    Find the size, nature and position of image formed when an object of size 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm.

  • 5)

    The radius of curvature of a convex mirror is 40 cm. Find its focal length  

9th Standard Science Term 1 Two Marks Model Question Paper - by Jai - Hosur View & Read

  • 1)

    Differentiate phototropism from photonasty.

  • 2)

    Define transpiration.

  • 3)

    Define photosynthesis.

  • 4)

    Draw the diagram of open stoma and label the parts.

  • 5)

    In the given photosynthetic experiment, what will happen to the leaf closed with black paper in starch test? Why?

9th Standard Science Term 1 Model One Marks Question Paper - by Jai - Hosur View & Read

  • 1)

    Choose the correct one

  • 2)

    Distance between Chennai and Kanyakumari can be found in

  • 3)

    Slope of the velocity - time graph gives

  • 4)

    Unit of acceleration is

  • 5)

    The field of view * is maximum for ________ 

9th Standard Science Chapter 9 Computer – An Introduction Model Question Paper - by Jai - Hosur View & Read

  • 1)

    ____________ is an electronic device which stores data and information

  • 2)

    Data processing involves________ steps

  • 3)

    1. Abacus belongs to the first generation of the computer
    2. ENIAC was used in the American military

  • 4)

    Write a note on ENIAC.

  • 5)

    Who was the first programmer?

9th Standard Science Chapter 8 Health and Hygiene - Food for living Model Question Paper - by Jai - Hosur View & Read

  • 1)

    The nutrient required in trace amounts to accomplish various body functions is _______________

  • 2)

    The sprouting of onion and potatoes can be delayed by the process of _______________

  • 3)

    An internal factor responsible for spoilage of food is _______________

  • 4)

    October _____ is declared as Global Iodine deficiency day.

  • 5)

    Identify the trace element

9th Standard Science Chapter 7 Living World of Animals - Diversity in Living Organism - Kingdom Animalia Model Question Paper - by Jai - Hosur View & Read

  • 1)

    Which is not an insect?

  • 2)

    Identify the animal having four chambered heart

  • 3)

    The bilaterally symmetrical larvae which transform into radially symmetrical adult is

  • 4)

    Choose the correct terms related for Hemichordate

  • 5)

    Crop, gizzard and air sacs are seen in

9th Standard Science Chapter 6 Living World of Plants - Plant Physiology Model Question Paper - by Jai - Hosur View & Read

  • 1)

    A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

  • 2)

    The chemical reaction occurs during photosynthesis is ________. 

  • 3)

    The bending of root of a plant in response to water is called _________ 

  • 4)

    The root of the plant is __________.
    i) positively phototropic but negatively geotropic
    ii) positively geotropic but negatively phototropic
    iii) negatively phototropic but positively hydrotropic
    iv)negatively hydrotropic but positively phototropic

  • 5)

    Dandelion flowers open the petals in bright light during the day time but close the petals in dark at night. This response of Dandelion flowers is called ___________.

9th Standard Science Chapter 5 Atomic Structure Important Question Paper - by Jai - Hosur View & Read

  • 1)

    Among the following the odd pair is

  • 2)

    The term nucleons refer to

  • 3)

    The correct electronic configuration of potassium is

  • 4)

    Law of multiple proportions was proposed by _________

  • 5)

    An alpha particle is identical with a ___________Nucleus.

9th Standard Science Chapter 4 Matter Around Us Important Question Paper - by Jai - Hosur View & Read

  • 1)

    The physical state of water at 373 K is

  • 2)

    When we mix a drop of ink in water we get a__________

  • 3)

    __________ has the same properties throughout the sample

  • 4)

    The separation of denser particles from lighter particles done by rotation at high speed is called ________

  • 5)

    For a simple distillation process we need to have

9th Standard Science Chapter 3 Light Important Question Paper - by Jai - Hosur View & Read

  • 1)

    The field of view * is maximum for ________ 

  • 2)

    _________ is used as reflectors in torchligh

  • 3)

    When a beam of white light passes through a prism it gets

  • 4)

    A real and enlarged image can be obtained by using a

  • 5)

    Mirrors having spherical surface of reflection are __________________

9th Standard Science Chapter 2 Motion Important Question Paper - by Jai - Hosur View & Read

  • 1)

    Slope of the velocity - time graph gives

  • 2)

    Unit of acceleration is

  • 3)

    The force responsible for drying of clothes in a washing machine is

  • 4)

    In a 100 m race, the winner takes 10s to reach the finishing point. The average speed of the winner is ___________ ms-1

  • 5)

    Speed is never ______

9th Stateboard Science Important Question Paper - by Jai - Hosur View & Read

  • 1)

    Choose the correct one

  • 2)

    Rulers, measuring tapes and metre scales are used to measure

  • 3)

    Density is_________

  • 4)

    Unit of acceleration is________.

  • 5)

    Light year is the distance travelled by light________.

9th Standard Science Measurement and Measuring Instruments Important Questions - by Saranya View & Read

  • 1)

    Rulers, measuring tapes and metre scales are used to measure

  • 2)

    Which among the following is not a device to measure mass

  • 3)

    ___________is the derived quantity.

  • 4)

    Unit of time is_________.

  • 5)

    There are___________fundamental units in SI system of units.

9th Standard science Model Question Paper Term 3 - by Saranya View & Read

  • 1)

    In a pressure cooker, the food is cooked faster because

  • 2)

    If the speed of a wave is 340 m s-1 and its frequency is 1700 Hz, then wavelength λ for this wave in cm will be

  • 3)

    Which of the following statements is correct?
    A. There are eight planets in our Solar System.
    B. Except Mars, all other planets revolve around the Sun in elliptical orbits

  • 4)

    Plastics made of Polycarbonate (PC) and Acrylonitrile Butadiene Styrene (ABS) are made of resin code ___________

  • 5)

    The lead pencil contains

9th Standard Science Revision Test Question Paper Free Download 2019 - by Saranya View & Read

  • 1)

    The size of an air bubble rising up in water

  • 2)

    Sound travels in air:

  • 3)

    Ceres is a _______.

  • 4)

    Which of the following plastic items are banned by the Government of Tamil Nadu as of 1st January 2019?

  • 5)

    The lead pencil contains

9th Standard Science World of Microbes unit Important Questions and Answers - by Saranya View & Read

  • 1)

    Mycology is the branch of biology that deals with the study of

  • 2)

    The major constituent of vinegar is

  • 3)

    Bacteria involved in curd formation is

  • 4)

    Which of the following is transmitted through air?

  • 5)

    Syphilis is caused by

9th Standard Science Economics Chapter Important Questions - by Saranya View & Read

  • 1)

    The production and management of fish is called

  • 2)

    Which one of the following is not an exotic breed of cow?

  • 3)

    Which one of the following is an Italian species of honey bee?

  • 4)

    Which one of the following is not an Indian major carp?

  • 5)

    Drones in the honey bee colony are formed from

9th Standard Science Environmental Science Chapter Important Short Questions and Answers - by Saranya View & Read

  • 1)

    What are the two factors of biosphere?

  • 2)

    According to you, which process of water cycle is adversely affected by human activities?

  • 3)

    How do human activities affect nitrogen cycle?

  • 4)

    What is adaptation?

  • 5)

    What are the challenges faced by hydrophytes in their habitat?

9th Standard Science Term 3 Applied Chemistry Important Questions and Answers - by Saranya View & Read

  • 1)

    One Nanometre is

  • 2)

    The antibiotic Penicillin is obtained from ___________ 

  • 3)

    1% solution of Iodoform is used as

  • 4)

    The cathode of an electrochemical reaction involves ____________

  • 5)

    The age of a dead animal can be determined by using an isotope of ____________

9th Standard Science Carbon and its Compounds Chapter Important Question and Answers - by Saranya View & Read

  • 1)

    Differentiate graphite and diamond

  • 2)

    What are saturated and unsaturated compounds called?

  • 3)

    Carbon do not form ionic compounds. Why?

  • 4)

    What is the valency of carbon in carbon monoxide?

  • 5)

    Why are one-time use and throwaway plastics harmful?

9th Standard Science Sound and Universe Important questions and answers - by Saranya View & Read

  • 1)

    Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

  • 2)

    Sound travels in air:

  • 3)

    A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through

  • 4)

    If the speed of a wave is 340 m s-1 and its frequency is 1700 Hz, then wavelength λ for this wave in cm will be

  • 5)

    Which of the following statement best describes frequency?

9th Standard Science Term 3 Fluids Chapter Important Questions and Answers - by Saranya View & Read

  • 1)

    In a fluid, buoyant force exists because pressure at the ____________ of an object is greater than the pressure at the top.

  • 2)

    The weight of the body immersed in a liquid appears to be_____________ than its actual weight.

  • 3)

    The instrument used to measure atmospheric pressure is _____________.

  • 4)

    The magnitude of buoyant force acting on an object immersed in a liquid depends on ___________of the liquid.

  • 5)

    A drinking straw works on the existence of _________.

9th Standard Science Revision Test Important One Mark Questions and Answers - by Saranya View & Read

  • 1)

    Clouds float in atmosphere because of their low

  • 2)

    In a pressure cooker, the food is cooked faster because

  • 3)

    Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

  • 4)

    If the speed of a wave is 340 m s-1 and its frequency is 1700 Hz, then wavelength λ for this wave in cm will be

  • 5)

    The maximum speed of vibrations which produces audible sound will be in

9th Standard Science Half Yearly Test Paper - by Saranya View & Read

  • 1)

    Clouds float in atmosphere because of their low

  • 2)

    In the sound wave produced by a vibrating turning fork as shown in the diagram, half the wave length is represented by:

  • 3)

    The Big Bang occurred ________ years ago.

  • 4)

    Carbon forms large number of organic compounds due to

  • 5)

    Plastic resin codes are shown as three chasing arrows in a ______________ with a number in the middle or letters (an acronym of that plastic type).

Class 9 science Term 3 Model Question - by Saranya View & Read

  • 1)

    An empty plastic bottle closed with an airtight stopper is pushed down into a bucket filled with water. As the bottle is pushed down, there is an increasing force on the bottom as shown in graph. This is because

  • 2)

    Which of the following can produce longitudinal waves as well as transverse waves under different conditions?

  • 3)

    Which of the following statements is correct?
    A. There are eight planets in our Solar System.
    B. Except Mars, all other planets revolve around the Sun in elliptical orbits

  • 4)

    Which of the following does not contain double bond

  • 5)

    Which of the following plastic items are banned by the Government of Tamil Nadu as of 1st January 2019?

9th Standard Science Model Question - by Saranya View & Read

  • 1)

    Clouds float in atmosphere because of their low

  • 2)

    The speeds of sound in four different media are given below. Which of the following is the most likely speed in m s-1 with which the two under water whales in a sea can talk to each other when separated by a large distance?

  • 3)

    Ceres is a _______.

  • 4)

    A phenomenon in which an element exists in different modification in same physical state is called

  • 5)

    Diamond is not a good conductor of electricity because

9th Science Second Summative exam 2018 question paper - by Saranya View & Read

  • 1)

    SI unit of temperature is

  • 2)

    Electroplating is an example for

  • 3)

    Bond formed between a metal and non-metal atom is usually____________

  • 4)

    Since metal carbonate and metal bicarbonate are basic they react with acids to give salt and water with the liberation of__________

  • 5)

    The tissue composed of living thin walled polyhedral cell is

9th Science Term 2 Model Exam 2018 exam Question paper - by Saranya View & Read

  • 1)

    The specific heat capacity of water is

  • 2)

    Electric field lines________ from positive charge and__________ in negative charge.

  • 3)

    Number of valence electrons in carbon is

  • 4)

    The hydrated salt of copper sulphate has______colour

  • 5)

    Unstriated muscles are found in

9th Science Second Revision Question Paper - by Saranya View & Read

  • 1)

    ____________is the fundamental quantity.

  • 2)

    Force involved in uniform circular motion is given by _______________

  • 3)

    The focal length of a concave mirror is 5cm. Its radius of curvature is

  • 4)

    For a simple distillation process we need to have

  • 5)

    The number of protons, neutrons and electrons present respectively in \(_{ 35 }^{ 80 }{ Br }\)

9th Science Slip Test - by Saranya View & Read

  • 1)

    ____________is the fundamental quantity.

  • 2)

    Newton,henry, ampere and watt are___________named after scientist.

  • 3)

    The area under velocity – time graph represents

  • 4)

    Unit of acceleration is

  • 5)

    _________ is used as reflectors in torchligh

9th Science First Revision Question Paper - by Saranya View & Read

  • 1)

    Density is_________

  • 2)

    1 quintal is equal to_______kg.

  • 3)

    A body moving with an initial velocity 5ms-1 and accelerates at 2ms-2. Its velocity after 10s is

  • 4)

    Choose correct statement
    (a) Action and reaction forces act on same object
    (b) Action and reaction forces act on different objects
    Both (a) and (b) are possible
    Neither (a) nor (b) is correct

  • 5)

    The focal length of a concave mirror is 5cm. Its radius of curvature is

9th Science Important Two Mark Question Paper - by Saranya View & Read

  • 1)

    Convert : 104°F in to Celsius scale.

  • 2)

    Complete the table:

    Power of 10 Prefix Symbol
    1012 ___(i)___ T
    ___(ii)___ Kilo K
    1015 Peta ___(iii)__
    109 ___(iv)__ ___(v)__
  • 3)

    Define the terms rest and motion.

  • 4)

    What is speed?

  • 5)

    Name the spherical mirror(s) that has/have 
    i) Virtual principal focus
    ii) Real principal focus

Animal Kingdom & Cells & Is Matter Around Us Pure Important Question On 9th Science - by Saranya View & Read

  • 1)

    Which among the following is not a device to measure mass

  • 2)

    ____________is the fundamental quantity.

  • 3)

    Light year is the distance travelled by light________.

  • 4)

    Slope of the velocity - time graph gives

  • 5)

    The force responsible for drying of clothes in a washing machine is

9th Science Important One Mark Question Paper - by Saranya View & Read

  • 1)

    Choose the correct one

  • 2)

    Rulers, measuring tapes and metre scales are used to measure

  • 3)

    1 metric ton is equal to

  • 4)

    Distance between Chennai and Kanyakumari can be found in

  • 5)

    Which among the following is not a device to measure mass

9th Science Model Question Paper 1 - by Saranya View & Read

  • 1)

    ____________ is an electronic device which stores data and information

  • 2)

    _________ belongs to the generation IV of the computer

  • 3)

    Data processing involves________ steps

  • 4)

    1. Abacus belongs to the first generation of the computer
    2. ENIAC was used in the American military

  • 5)

    Define computer.

9th Science Model Question Paper 2 - by Saranya View & Read

  • 1)

    The nutrient required in trace amounts to accomplish various body functions is _______________

  • 2)

    The physician who discovered that scurvy can be cured by ingestion of citrus fruits is  ______________

  • 3)

    The sprouting of onion and potatoes can be delayed by the process of _______________

  • 4)

    Food and Adulteration Act was enacted by Government of India in the year _______________

  • 5)

    An internal factor responsible for spoilage of food is _______________

9th Science Model Question Paper 3 - by Saranya View & Read

  • 1)

    Which is not an insect?

  • 2)

    Find the group having only marine members

  • 3)

    Mesoglea is present in

  • 4)

    Dysentery is caused by

  • 5)

    Which one of the following pairs is not a poikilothermic animal

Plant Physiology Important Question Paper In 9th Science - by Saranya View & Read

  • 1)

    The tropic movement that helps the climbing vines to find a suitable support is ________. 

  • 2)

    The chemical reaction occurs during photosynthesis is ________. 

  • 3)

    Transpiration is best defined as _________ 

  • 4)

    The non-directional movement of a plant part in response to temperature is called ________.

  • 5)

    Chlorophyll in a leaf is required for __________.

Matter Around Us Important Question Paper In 9th Science - by Saranya View & Read

  • 1)

    The physical state of water at 373 K is

  • 2)

    Among the following______is a mixture

  • 3)

    When we mix a drop of ink in water we get a__________

  • 4)

    The constituents that form a mixture are also called

  • 5)

    __________ has the same properties throughout the sample

Atomic Structure Important Question Paper In 9th Science - by Saranya View & Read

  • 1)

    Among the following the odd pair is

  • 2)

    Change in the number of neutrons in an atom changes it to

  • 3)

    The term nucleons refer to

  • 4)

    The number of protons, neutrons and electrons present respectively in \(_{ 35 }^{ 80 }{ Br }\)

  • 5)

    The correct electronic configuration of potassium is

Light Important Question Paper In 9th Science - by Saranya View & Read

  • 1)

    The field of view * is maximum for ________ 

  • 2)

    When a ray of light passes from one medium to another medium, refraction takes place when angle of incidence is

  • 3)

    When the reflecting surface is curved outwards the mirror formed will be

  • 4)

    The focal length of a concave mirror is 5cm. Its radius of curvature is

  • 5)

    The speed of light is maximum in

9th Science Term I Model Question Paper - by Saranya View & Read

  • 1)

    Choose the correct one

  • 2)

    1 metric ton is equal to

  • 3)

    The force responsible for drying of clothes in a washing machine is

  • 4)

    Force involved in uniform circular motion is given by _______________

  • 5)

    _________ is used as reflectors in torchligh

9th Science Term I Important One Mark Question Paper - by Saranya View & Read

  • 1)

    Rulers, measuring tapes and metre scales are used to measure

  • 2)

    Which of the following graph represents uniform motion of a moving particle

  • 3)

    The centrifugal force is

  • 4)

    The field of view * is maximum for ________