### 9th Standard Science Study material & Free Online Practice Tests - View Model Question Papers with Solutions for Class 9 Session 2019 - 2020 TN Stateboard [ Chapter , Marks , Book Back, Creative & Term Based Questions Papers - Syllabus, Study Materials, MCQ's Practice Tests etc..]

#### 9th Standard Science 5 Mark Important Questions (Bookback and Creative) - by Jai - Hosur - View & Read

• 1)

Calculate the positive and negative error from the given figure

• 2)

Explain the method to find the diameter of the sphere.

• 3)

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 ?

• 4)

Explain with diagrams how refraction of incident light takes place from
a) rarer to denser medium
b) denser to rarer medium
c) normal to the surface separating the two media.

• 5)

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.

#### 9th Standard Science 4 Mark Important Questions (Bookback and Creative) - by Jai - Hosur - View & Read

• 1)

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

• 2)

How will you measure the least count of vernier caliper ?

• 3)

The Main scale reading is 3.8 Vernier scale coincidence = 5th division. No zero error. Find the length of the iron cylinder.

• 4)

What do you understand about negative acceleration?

• 5)

What is meant by uniform circular motion? Give two examples of uniform circular motion.

#### 9th Standard Science 2 Mark Important Questions (Bookback and Creative) - by Jai - Hosur - View & Read

• 1)

Define least count of any device

• 2)

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

• 3)

Calculate the correct readings of the Vernier caliper L.C. 0.01 em Zero correction - Nil.

 S.No. M.S.R V.C Observed Reading = M.S.R + (V.C x L.C) Correct Reading 1 3 4 2 3 7
• 4)

How is washing machine wash the clothes?

• 5)

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

#### 9th Standard Science 1 Mark Important Questions (Bookback and Creative) - by Jai - Hosur - View & Read

• 1)

Choose the correct one

• 2)

Which among the following is not a device to measure mass

• 3)

Unit of acceleration is________.

• 4)

The area under velocity – time graph represents

• 5)

Force involved in uniform circular motion is given by _______________

#### 9th Standard Science Annual Exam Model Question Paper IV - 2019 - 2020 - by Jai - Hosur - View & Read

• 1)

Many of the ancient system of measurement were based on the dimensions of___________.

• 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)

The point at which the rays are converged or diverged by a mirror is _____________________

• 4)

The correct electronic configuration of potassium is

• 5)

Which vitamin causes bow legs?

#### 9th Standard Science Annual Exam Model Question Paper III - 2019 - 2020 - by Jai - Hosur - View & Read

• 1)

____________is the fundamental quantity.

• 2)

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

• 3)

According _______________________to of light, angle of incidence is equal to angle of reflection

• 4)

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

• 5)

Identify the mineral which regulates nerve and muscles activity?

#### 9th Standard Science Annual Exam Model Question Paper II - 2019 - 2020 - by Jai - Hosur - View & Read

• 1)

There are___________fundamental units in SI system of units.

• 2)

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

• 3)

The centre of the sphere, of which a spherical mirror is a part is called ______________________

• 4)

The correct electronic configuration of potassium is

• 5)

Which one of the following is a disaccharide?

#### 9th Standard Science Important Questions - by Jai - Hosur - View & Read

• 1)

Rulers, measuring tapes and metre scales are used to measure

• 2)

The diameters of spherical objects are measured with a_________scale.

• 3)

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

• 4)

The hands of the clock, the spokes of wheel are example of _______

• 5)

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

#### 9th Standard Science Annual Exam Model Question Paper 2019 - 2020 - by Jai - Hosur - View & Read

• 1)

___________is the derived quantity.

• 2)

The area under velocity time graph represents

• 3)

The centre of the sphere, of which a spherical mirror is a part is called ______________________

• 4)

Among the following the odd pair is

• 5)

Internal factor which is responsible for food spoilage is  ___________.

#### 9th Science - Full Portion Five Marks Question Paper - by 8682895000 - View & Read

• 1)

Find the thickness of a five rupee coin with the screw gauge, if the pitch scale reading is 1 mm and its head scale coincidence is 68.

• 2)

Calculate the positive and negative error from the given figure

• 3)

A ball is gently dropped from a height of 20m. If its velocity increases uniformly at the rate of 10 ms-2 with what velocity will it strike the ground? After what time will it strike the ground?

• 4)

Derive the three equations of motion by graphical method

• 5)

Draw a ray diagram to show the formation of image by a concave mirror for an object placed between its pole and Principal focus and state three characteristics of the image.

#### 9th Science - Full Portion Three Marks Question Paper - by 8682895000 - View & Read

• 1)

Write the need of a standard unit

• 2)

An object travels 16m in 4s and then another 16m in 2 s. What is the average speed of the object?

• 3)

What is meant by uniform circular motion? Give two examples of uniform circular motion.

• 4)

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.

• 5)

State the laws of refraction.

#### 9th Science - Full Portion Two Marks Question Paper - by 8682895000 - View & Read

• 1)

What is the full form of SI system?

• 2)

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

• 3)

A cyclist turning a corner leans inwards. Why?

• 4)

A coin in a glass beaker appears to rise as the beaker is slowly filled with water, why?

• 5)

If an object is placed at the focus of a concave mirror, where is the image formed?

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

• 1)

How much percentage of Nitrogen consist in Earth's atmosphere?

• 2)

Deforestation generally decrease ______________.

• 3)

World water day is celebrated every year on ____________.

• 4)

Biotic components include _______________.

• 5)

Which part of plant consisting Nitrogen fixing bacteria?

#### 9th Science - World of Microbes Model Question Paper - by Jai - Hosur - View & Read

• 1)

Flagella arranged along the sides of the bacteria _____________.

• 2)

Which substance is produced within an organism to prevent the spread of microorganism?

• 3)

Which antibiotic is extracted from fungi?

• 4)

Which of the following micro organism helps in fermentation?

• 5)

Carrier of malaria causing protozoa

#### 9th Science - Applied Chemistry Model Question Paper - by Jai - Hosur - View & Read

• 1)

____________ Present in the lemon juice acts as electrolyte.

• 2)

Which of the foliowing methods is suitable for preventing iron frying pan from rusting?

• 3)

Chloroform reacts with oxygen and forms this toxic substance, hence it is not used now

• 4)

Paracetamol is an _____________.

• 5)

Congo red is a __________.

#### 9th Science - Hardware and Software Model Question Paper - by Jai - Hosur - View & Read

• 1)

• 2)

Which of the following is correct?

• 3)

LINUX is a

• 4)

Find out the Paid and Proprietary software from the given list

• 5)

_________is an Operating System.

#### 9th Science - Economic Biology Model Question Paper - by Jai - Hosur - View & Read

• 1)

Apiculture is the rearing of ____________.

• 2)

The quality and taste of honey depends upon the flower visited by _____________.

• 3)

Nowadays organic farming and organic products are very popular, which of the following is the reason for people to prefer this kind of products.

• 4)

It is a live floating nitrogen factory.

• 5)

Flavonoids drug is obtained from _______________.

#### 9th Science - Carbon and its Compounds Model Question Paper - by Jai - Hosur - View & Read

• 1)

What is the minimum number of carbon atoms of an alkane must have to form an isomer?

• 2)

Hydrocarbons on burning in the air give CO2 and _____________.

• 3)

Which Amorphous form of carbon is used in making electrode in dry cell?

• 4)

The thinnest and strongest allotrop of carbon is ______________.

• 5)

Incomplete combustion of carbon fuels release this toxic gas into the atmosphere.

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

• 1)

Which of the following is not a planet of our solar system?

• 2)

In a geostationary orbit, a satellite is at a distance of _______________ from the Earth.

• 3)

Stars, in a constellation form _____________.

• 4)

Which of the following units is used to measure distance between the stars?

• 5)

The member of our solar system, with highly tiited orbit is _____________.

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

• 1)

Which of the following are infrasonic waves?

• 2)

Speed of sound in solids does not depend upon __________.

• 3)

The back and forth motion of the object is called ___________.

• 4)

A Sonar device on a submarine send out a signal and receives an echo 5 seconds later. Calculate the speed of sound it water if the distance of the object from the submarine is 3500 m

• 5)

The phenomenon of echo of sound waves is due to _____________.

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

• 1)

Unit of thrust is _____________.

• 2)

Instrument used to measure relative density

• 3)

Heavy trucks are fitted with six to eight wheels, As area increases, Pressure will ___________.

• 4)

An iron ball is weighed in air and then in water by a spring balance.

• 5)

When a solid is partly or wholly immersed in a fluid, it experiences an apparent loss in ____________.

#### 9th Science - Parts of Computer Model Question Paper - by Jai - Hosur - View & Read

• 1)

Which one of the following is an output device?

• 2)

_____________plays an important role in a computer as an inpute device

• 3)

___________is an essentional part of the computer

• 4)

A bit has a single binary value either __________ or __________

• 5)

Personal computer comes under the_________ computer.

#### 9th Science - Organ Systems in Animals Model Question Paper - by Jai - Hosur - View & Read

• 1)

In the dental formula $\cfrac { 2 }{ 2 } ,\cfrac { 1 }{ 1 } ,\cfrac { 2 }{ 2 } ,\cfrac { 3 }{ 3 }$refers to__________

• 2)

Lysozyme is seen in_______

• 3)

Curdling of milk protein is done by___________

• 4)

The act of bringing swallowed food back to the mouth is called___________

• 5)

Gastric glands do not secrete__________

#### 9th Science - Organization of Tissues Model Question Paper - by Jai - Hosur - View & Read

• 1)

__________is derived from ground meristem

• 2)

The____________ epithelium forms a selective permeable membrane surface.

• 3)

Elastic structures which connect bone to bone are called___________

• 4)

_________is seen in unicellular animals.

• 5)

The ________is a long fibre like process

#### 9th Science - Acids, Bases and Salts Model Question Paper - by Jai - Hosur - View & Read

• 1)

Hydrochloric Acid reacts with metal bicarbonates to give______

• 2)

_____&_______metals do not react with HCI or HNO3

• 3)

Which of the following are the is a weak bases?

• 4)

Which of the following solution is soapy to touch?

• 5)

Which of the following solutions do not conduct electricity?

#### 9th Science - Chemical Bonding Model Question Paper - by Jai - Hosur - View & Read

• 1)

Alkali and alkaline earth metals form____________ compound when they react with nonmetals

• 2)

___________compounds are highly brittle

• 3)

_______________is an example of a covalent compound having high melting point

• 4)

Which of the following compound(s) possesses high melting point?

• 5)

Statement (A) : Covalent compounds are bad conductor of electricity.
Reason (B) Covalent compounds contain charged particles (ions)

#### 9th Science - Periodic classification of elements Model Question Paper - by Jai - Hosur - View & Read

• 1)

Noble gases are placed in_____________ group in the modern periodic table.

• 2)

Group 16 elements are collectively called as__________

• 3)

d-block elements are otherwise known as_______

• 4)

Assertion (A): Noble gases are chemically inert in nature.
Reason (R) : Noble gases have stable electronic structures

• 5)

What are alloys?

#### 9th Science - Magnetism and Electromagnetism Model Question Paper - by Jai - Hosur - View & Read

• 1)

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

• 2)

The magnetic field produced due to a circular wire at its centre is_________

• 3)

A magnetic field exerts no force on________

• 4)

At the  centre of a magnet, the magnetism is____________

• 5)

Induced current flows through a coil__________

#### 9th Science - Electric Charge and Electric Current Model Question Paper - by Jai - Hosur - View & Read

• 1)

A current of 2A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is__________

• 2)

The resistance of a straight conductor is independent of__________

• 3)

Two resistances R1 and R2 are connected is parallel. Their equivalent resistance is__________

• 4)

If in the circuit, power dissipation is 150 W, then R - is___________

• 5)

The resistance of a conductor is R. If its length is doubled, then its new resistance will be_______________

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

• 1)

The amount of heat required to raise the temperature through 10C is called_________

• 2)

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

• 3)

Ice does not melt rapidly because of

• 4)

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

• 5)

On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?

#### 9th Science - Computer – An Introduction Model Question Paper - 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)

Write a note on ENIAC.

#### 9th Science - Nutrition and Health Model Question Paper - by Jai - Hosur - View & Read

• 1)

Riboflavin is other name of vitamin _____

• 2)

Diarrhoea is caused due to the deficiency of vitamin ______

• 3)

Any disease caused by the presence of excess vitamin is _________ .

• 4)

Blood clot is prevented by the vitamin _________ .

• 5)

Proteins are made of ____________ .

#### 9th Science - Animal Kingdom Model Question Paper - by Jai - Hosur - View & Read

• 1)

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

• 2)

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

• 3)

Incomplete digestive system is found in__________.

• 4)

Which among the following organism has water vascular system in its body?

• 5)

The non-cellularjelly like layer is present in between ectoderm and endoderm in coelenterates is_________.

#### 9th Science - Plant Physiology Model Question Paper - by Jai - Hosur - View & Read

• 1)

Shoots are said to_____________.

• 2)

Rhizophora is an example for_________________.

• 3)

Priestley concluded that spring of mint had absorbed________________.

• 4)

Identify the false statement

• 5)

Photosynthesis occurs in most plants during the________________.

#### 9th Science - Atomic Structure Model Question Paper - by Jai - Hosur - View & Read

• 1)

Protons and neutrons are collectively called as ________

• 2)

Atoms of the same element having same atomic number but different Mass number are called _________

• 3)

The electronic configuration of Neon is 2, 8. So the valency is _________

• 4)

• 5)

Gay-Lussac law always dealing with________

#### 9th Science - Matter Around Us Model Question Paper - by Jai - Hosur - View & Read

• 1)

The physical state of water at 373 K is

• 2)

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

• 3)

Filtration method is effective in separating _______ mixture

• 4)

Solids_____into liquid

• 5)

_____ is a process by which a substance changes from the liquid to gaseous state.

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

• 1)

A real and enlarged image can be obtained by using a

• 2)

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

• 3)

The angle between the normal and the refracted ray is called angle of ________________________

• 4)

The second law of refraction is stated by ____________________

• 5)

The velocity of light in air is______________

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

• 1)

The area under velocity time graph represents

• 2)

When a body starts from rest, the acceleration of the body after 2second in _____________ of its displacement

• 3)

Force involved in uniform circular motion is given by _______________

• 4)

The hands of the clock, the spokes of wheel are example of _______

• 5)

In which direction of the motion of the particles does centripetal force act?

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

• 1)

Distance between Chennai and Kanyakumari can be found in

• 2)

Which among the following is not a device to measure mass

• 3)

The measure the diameter of a thin wire_________is used.

• 4)

____________balance is used in lab.

• 5)

_________is the unit distance used to measure astronomical objects outside the solar system.

#### 9th Science - Half Yearly Model Question Paper 2019 - by Jai - Hosur - View & Read

• 1)

Choose the correct one

• 2)

A body moving along a circular path has _______

• 3)

The velocity of light in air is______________

• 4)

Protons and neutrons are collectively called as ________

• 5)

From the following options select the statement which is not applicable to frog?

#### 9th Science - Hardware and Software Model Question Paper - by Preetha - Cuddalore - View & Read

• 1)

• 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 Model Question Paper - by Preetha - Cuddalore - View & Read

• 1)

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

• 2)

Mosquito borne viral diseases are

• 3)

The primary organ infected during tuberculosis is

• 4)

Poliomyelitis virus which causes infantile paralysis enters the body through

• 5)

Which of the following micro organism helps in fermentation?

#### 9th Science - Economic Biology Model Question Paper - by Preetha - Cuddalore - View & Read

• 1)

The production and management of fish is called

• 2)

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

• 3)

Drones in the honey bee colony are formed from

• 4)

The plant body of mushroom is

• 5)

It is a live floating nitrogen factory.

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

• 1)

The ice sheets from the north and south poles and the icecaps on the mountains, get converted into water vapour through the process of ______________.

• 2)

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

• 3)

Which of the following is one of the strategies to conserve water?

• 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)

Deforestation generally decrease ______________.

#### 9th Science - Applied Chemistry Model Question Paper - by Preetha - Cuddalore - View & Read

• 1)

One Nanometre is

• 2)

1% solution of Iodoform is used as

• 3)

The cathode of an electrochemical reaction involves ____________

• 4)

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

• 5)

This type of food protect us from deficiency diseases.

#### 9th Science - Carbon and its Compounds Model Question Paper - by Preetha - Cuddalore - 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)

Carbon forms large number of organic compounds due to

• 4)

Which of the following does not contain double bond

• 5)

Which of the following is highly toxic?

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

• 1)

Who proposed the heliocentric model of the universe?

• 2)

Which of the following is not a part of outer solar system?

• 3)

Ceres is a _______.

• 4)

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?

• 5)

The Big Bang occurred ________ years ago.

#### 9th Science - Sound Model Question Paper - by Preetha - Cuddalore - View & Read

• 1)

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

• 2)

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

• 3)

The sound waves travel faster

• 4)

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

• 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 - Parts of Computer Model Question Paper - by Preetha - Cuddalore - View & Read

• 1)

Which one of the following is an output device?

• 2)

Which one of the following is an input device?

• 3)

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

• 4)

Pen drive is _______device.

• 5)

___________is an essentional part of the computer

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

• 1)

The size of an air bubble rising up in water

• 2)

Clouds float in atmosphere because of their low

• 3)

In a pressure cooker, the food is cooked faster because

• 4)

In CGS system pressure is measured in ____________.

• 5)

Heavy trucks are fitted with six to eight wheels, As area increases, Pressure will ___________.

#### 9th Standard Science - Organ Systems in Animals Model Question Paper - by Preetha - Cuddalore - View & Read

• 1)

Which of the following is not a salivary gland?

• 2)

Stomach of man mainly digests

• 3)

Which one of the following substance is not a constituent of sweat?

• 4)

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

• 5)

__________is the smallest gland

#### 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)

• 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)

#### 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 2 3 4 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)

#### 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)

• 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,

### TN Stateboard Education Study Materials

#### 9th Stateboard Science 2019 - 2020 Academic Monthly Syllabus - by Jai - Hosur Aug 13, 2019 Aug 13, 2019

Science 2019 - 2020 Academic Monthly Syllabus

### TN Stateboard Updated Class 9th Science Syllabus

#### Measurement and Measuring Instruments

Introduction-Physical Quantities and Units-SI System of Units-Fundamental Units of SI System-Unit Prefixes-Rules and Conventions for Writing SI Units and their Symbols-Vernier Caliper and Screw Gauge-Screw Gauge-Measuring Mass-Accuracy in Measurements

#### Motion

Introduction-State of Rest and Motion-Types of Motion-Distance and Displacement-Uniform and Non Uniform Motion-Speed, Velocity and Acceleration-Graphical Representation of Motion along a Straight Line-Equations of Motion-Centripetal Acceleration and Centripetal Force-Centrifugal Force-Summary

#### Light

Introduction-Reflection of Light-Curved Mirrors-Image Formed by Curved Mirrors-Real and Virtual Image-Concave Mirror-Convex Mirror-Speed of Light-Total Internal Reflection

#### Matter Around us

Introduction-Is Matter Particulate or Continuous?-Evidence for Existence of Particles?-Kinetic Particle Theory of Three States of Matter-Solid, Liquid and Gas-Solids-Liquids-Gases-Effect of Temperature on Movement of Particles-Changes in States of Matter and the Kinetic Particle Theory-Melting-Freezing-Boiling-Evaporation-Sublimation-Effect of Pressure on Gases-Classification of Matter Based on Composition-Element-Compound-Differences between Mixtures and Compounds-Types of Mixtures-Colloidal Solutions-Separation of Mixtures

#### Atomic Structure

Introduction-Laws of Chemical Combination-Law of Reciprocal Proportions-Discovery of Nucleus-Discovery of Neutrons-Isotopes (Iso – same, topo – place, Isotope – same place)

#### Living World of Plants-Plant Physiology

Introduction-Do they Move on their own Accord?-Do Plants Move?-Do Plants Actually Sense Light?-Types of Tropisms in Plants-More to Movement than Growth-What is Photosynthesis?-Food chain: the Link between Plants, Animals and Microorganisms-Respiration in plants

#### Living World of Animals-Diversity in Living Organism-Kingdom Animalia

Introduction-Classification of Living Organisms-Criteria for classification of Animal Kingdom-Phylum-Protozoa-Phylum-Porifera (Pore bearers)-Phylum-Coelenterata or Cnidaria-Phylum: Platyhelminthes-(Flat worms)-Phylum-Nematoda Aschelminthes (Round worms)-Phylum-Annelida-(Segmented Worms)-Phylum-Arthropoda-(Organisms with Jointed Legs)-Phylum Mollusca-(Soft Bodied Animals)-Phylum Echinodermata-(Spiny Skinned Animals)-Phylum Chordata-Division Vertebrata (Craniata)-Super Class Tetrapoda-Binomial Names of Common Animals

#### Health and Hygiene-Food for Living

Introduction-Classes of Nutrients-A Case Study-Protein Energy Malnutrition (PEM)-Minerals-Functions and Deficiency Diseases-Vitaminosis-Methods of Food Preservation-Adulteration

#### Computer - An Introduction

Computer-History of Computer-Generations of Computer-Data-Information

#### அளவீடுகளும், அளவிடும் கருவி்களும்

இயற்பியல் அளவுகள் மற்றும் அலகுகள்–SI அலகு முறை–SI முறையில் அடிப்படை அலகுகள்–அலகுகளுக்கான முன்னீடுகள்–SI அலகுகளை எழுத பின்பற்ற வேண்டிய விதிகளும், மரபுகள்–வெர்னியர் அளவு மற்றும் திருகு அளவி–திருகு அளவி–நிறையை அளவிடுதல்–அளவீடுகளில் துல்லியம்

#### இயக்கம்

அறிமுகம்–ஓய்வு மற்றும் இயக்க நிலை–இயக்கத்தின் பல்வேறு வகைகள்–தொலைவு மற்றும் இடப்பெயர்ச்சி–சீரான மற்றும் சீரற்ற இயக்கம்–வேகம்,திசைவேகம் மற்றும் முடுக்கம்–நேர்கோட்டு இயக்கத்தின் வரைபட விளக்கம்–இயக்கச் சமன்பாடுகள்–மையநோக்கு முடுக்கம் மற்றும் மையநோக்கு விசை–மையவிலக்கு விசை

#### ஒளி

அறிமுகம்–ஒளி எதிரொளிப்பு–வளைவு ஆடிகள்–வளைவு ஆடிகளால் ஏற்படும் பிம்பங்கள்–மெய் பிம்பமும் மாய பிம்பமும்–குழி ஆடி–குவி ஆடி–ஒளியின் திசைவேகம்–முழு அக எதிரொளிப்பு

#### நம்மைச் சுற்றியுள்ள  பருப்பொருட்கள்

அறிமுகம்–பருப்பொருட்கள் என்பது தனிப்பட்டதா அல்லது தொடர்ச்சியானதா?–துகள்கள் இருப்பதற்கான சான்றுகள்–மூன்று நிலைப் பருப்பொருட்களின்(திட,திரவ மற்றும் வாயு) இயக்கக் கொள்கை–திண்மம்–திரவங்கள்–வாயுக்கள்–துகள்கள் நகர்தலில் வெப்பநிலையின் விளைவு–பருப்பொருளின் நிலை மாற்றம் மற்றும் துகளின் இயக்கக் கொள்கை–உருகுதல்–உறைதல்–கொதித்தல்–ஆவியாதல்–பதங்கமாதல்–வாயுக்களின் மீது அழுதத்தின் விளைவு–இயைபு சார்ந்து பருப்பொருளின் வகைகள்–தனிமம்–சேர்மம்–கலவைகள் மற்றும் சேர்மங்களுக்கிடையேயான வேறுபாடுகள்–கலவையின் வகைகள்–கூழ்மக் கரைசல்கள்–கலவைகளைப் பிரித்தெடுத்தல்

#### அணு அமைப்பு

அறிமுகம்–வேதிச் சேர்க்கை விதிகள்–அணுக்கரு கண்டுபிடிப்பு–நியூட்ரான் கண்டுபிடிப்பு–ஐசோடோப்புகள்

#### தாவர உலகம் – தாவர செயலியல்

அறிமுகம்–தாமாகவே இவைகளால் இயங்க இயலுமா?–தாவரங்களால் நகர முடியுமா?–தாவரங்களால் ஒளியை உணர முடியுமா?–தாவர அசைவுகளின் வகைகள்–வளர்ச்சியை விட அசைவு இன்றியமையாதது–ஒளிச்சேர்க்கை என்றால் என்ன?–உணவுச்சங்கிலி:தாவரங்கள், விலங்குகள் மற்றும் நுண்ணுயிரிகளுக்கிடையேயான தொடர்பு–தாவரங்களில் சுவாசம்

#### விலங்குலகம் – உயிரிகளின் பல்வகைமை

அறிமுகம்–உயிரினங்களின் வகைப்பாடு–விலங்குலக வகைப்பாட்டின் அளவு கோல்கள்–தொகுதி–புரோட்டோசோவா–தொகுதி–துலையுடலிகள்–தொகுதி–குழியுடலிகள்–தொகுதி–தட்டைப்புழுக்கள்–தொகுதி–நிமட்டோடா(உருளைப் புழுக்கள்)–தொகுதி–வளைதசைப்புழுக்கள்–தொகுதி–கணுக்காலிகள்–தொகுதி–மெல்லுடலிகள்–தொகுதி–முட்தோலிகள்–தொகுதி–முதுகுநானுள்ளவை–பிரிவு முதுகெலும்பிகள்–மேல்வகுப்பு:நான்கு காலிகள்–விலங்குகளை இரு பெயரிடு முறையில் வகைப்படுத்துதல்

#### சுத்தம் மற்றும் சுகாதாரம் – உயிர்வாழ உணவு

அறிமுகம்–ஊட்டச்சத்துக்களின் வகைகள்–தனியாள் ஆய்வு–புரதச்சத்து குறைபாட்டு நோய்கள்–தாது உப்புக்களின் குறைப்பாட்டால் ஏற்படும் நோய்கள்–வைட்டமினோசிஸ்–உணவுப்பாதுகாப்பு முறைகள்–உணவு கலப்படம்

#### கணினி – ஓர்  அறிமுகம்

கணினி–கணினியின் வரலாறு–கணினியின் தலைமுறைகள்–தரவு–தகவல்

#### TN StateboardStudy Material - Sample Question Papers with Solutions for Class 9 Session 2019 - 2020

Latest Sample Question Papers & Study Material for class 9 session 2019 - 2020 for Subjects Maths , Social Science in PDF form to free download [ available question papers ] for practice. Download QB365 Free Mobile app & get practice question papers.

More than 1000+ TN Stateboard Syllabus Sample Question Papers & Study Material are based on actual Board question papers which help students to get an idea about the type of questions that will be asked in Class 9 Final Board Public examinations. All the Sample Papers are adhere to TN Stateboard guidelines and its marking scheme , Question Papers & Study Material are prepared and posted by our faculty experts , teachers , tuition teachers from various schools in Tamilnadu.

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