8th Standard EM Science Study material & Free Online Practice Tests - View Model Question Papers with Solutions for Class 8 Session 2019 - 2020
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Science Question Papers

8th Science - Matter Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    A form of non-metal which has high ductility is

  • 2)

    Which one of metal possess low tensile strength?

  • 3)

    Molecule ______ D. smallest unit of a substance

  • 4)

    Compound obtained from living sources such as plants and animals are called

  • 5)

    The compound used for the sterilisation of drinking water is________

8th Science - Light Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    The spherical mirror with a reflecting surface curved inward is called

  • 2)

    If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

  • 3)

    Mirrors which magnify the object placed close to them.

  • 4)

    In which mirror the following statement is labeled?

  • 5)

    When the angle of inclination decreases the number of images formed _________

8th Science - Forces and Pressure Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    If we apply a force against the direction of motion of a body, then the body will

  • 2)

    The unit of viscosity is

  • 3)

    Rain drops are spherical in nature because of _________

  • 4)

    The unit for surface tension is _________

  • 5)

    If the area of contact is greater, then the ______ will be greater.

8th Science - Measurement Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Luminous intensity is the intensity of

  • 2)

    SI unit stands for

  • 3)

    Quantities other than base quantities are called as

  • 4)

    __________ is the measure of the perceived power of light.

  • 5)

    The unit of charge is ______

8th Science - Half Yearly Model Question Paper 2019 - 2020 - by Chitra - Rajapalayam - View & Read

  • 1)

    Heat is a form of ________.

  • 2)

    Conduction is the heat transfer which takes place in a____________.

  • 3)

    Fuse is

  • 4)

    Aerated water contains

  • 5)

    Carbon dioxide with water changes

8th Science - Term 2 Full Syllabus Five Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Which one of the following statements about thermal conductivity is correct? Give reason.
    a) Steel > Wood > Water
    b) Steel > Water > Wood
    c) Water > Steel > Wood
    d) Water > Wood > Steel

  • 2)

    Soda bottle bursts sometimes when it is opened during summer. Why?

  • 3)

    How do astronauts breathe when they go beyond earth’s atmosphere?

  • 4)

    Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?

  • 5)

    How can we prove that the electrons carry negative charge?

8th Science - Term 2 Full Syllabus Three Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Write a note on thermostat.

  • 2)

    Explain the working of thermos flask.

  • 3)

    Explain three ways of charge transfer.

  • 4)

    What is electroscope? Explain how it works?

  • 5)

    How lightning takes place?

8th Science - Term 2 Full Syllabus Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    What are the effects of heat?

  • 2)

    Name three types of heat transfer

  • 3)

    What is conduction?

  • 4)

    What is earthing?

  • 5)

    What is electric circuit?

8th Science - Term 2 Reaching the age of Adolescence One Mark Questions with Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    Adolescence is the period of life between _____________ years of age.

  • 2)

    The period at which an organism attains sexual maturity is called _____________

  • 3)

    During puberty, the region below the waist become wider in _____________

  • 4)

    Adam’s apple is the growth of the ________

  • 5)

    Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

8th Science - Term 2 Movements One Mark Questions with Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    Which of the following parts of our body help us in movement?
    (i) Bones (ii) Skin (iii) Muscles (iv) Organs Choose the correct answer from the options below.

  • 2)

    Which one of the following organisms lack muscles and skeleton for movement?

  • 3)

    __________ joints are immovable.

  • 4)

    Why do underwater divers wear fin-like flippers on their feet ?

  • 5)

    External ear (pinna )is supported by

8th Science - Term 2 Atomic Structure One Mark Questions with Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of __________

  • 2)

    Cathode rays are made up of

  • 3)

    In water, hydrogen and oxygen are combined in the ratio of _______by mass.

  • 4)

    Which of the following statements made by Dalton has not undergone any change?

  • 5)

    In all atoms of an element

8th Science - Term 2 Air One Mark Questions with Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    Which of the following is true about oxygen?

  • 2)

    Aerated water contains

  • 3)

    Solvay process is a method to manufacture

  • 4)

    Carbon dioxide with water changes

  • 5)

    Which of the following is known as azote?

8th Science Term 2 Electricity One Mark Questions with Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    When an ebonite rod is rubbed with fur, the charge acquired by the fur is

  • 2)

    The electrification of two different bodies on rubbing is because of the transfer of

  • 3)

    Which of the following a simple circuit must have?

  • 4)

    An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

  • 5)

    Fuse is

8th Science - Term 2 Heat One Mark Questions with Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    Heat is a form of ________.

  • 2)

    If you apply some heat energy to a substance, which of the following can take place in it?

  • 3)

    Which of the following substances will absorb more heat energy?

  • 4)

    If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

  • 5)

    The process of converting a liquid into a solid is called_________.

8th Standard Science - Term 2 Digital Painting Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Tux paint software is used to ________.

  • 2)

    Which tool bar is used for drawing and editing controls in tux paint software?

  • 3)

    What is the short cut key for undo option?

  • 4)

    Tux Math software helps in learning the ________

  • 5)

    In Tux Math, space cadet option is used for_________.

8th Standard Science - Term 2 Reaching the age of Adolescence Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    The period at which an organism attains sexual maturity is called _____________

  • 2)

    During puberty, the region below the waist become wider in _____________

  • 3)

    ___________ are the chemical substances, secreted by endocrine glands.

  • 4)

    During menstruation, the progesterone level is ___________

  • 5)

    ___________ intake needs to be increased to prevent osteoporosis in later life.

8th Standard Science - Term 2 Movements Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Which of the following parts of our body help us in movement?
    (i) Bones (ii) Skin (iii) Muscles (iv) Organs Choose the correct answer from the options below.

  • 2)

    Which one of the following organisms lack muscles and skeleton for movement?

  • 3)

    __________ joints are immovable.

  • 4)

    Why do underwater divers wear fin-like flippers on their feet ?

  • 5)

    Which one of the following categories of vertebrae are correctly numbered.

8th Standard Science - Term 2 Atomic Structure Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of __________

  • 2)

    Cathode rays are made up of

  • 3)

    In water, hydrogen and oxygen are combined in the ratio of _______by mass.

  • 4)

    Which of the following statements made by Dalton has not undergone any change?

  • 5)

    In all atoms of an element

8th Standard Science - Term 2 Air Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Which of the following is true about oxygen?

  • 2)

    Aerated water contains

  • 3)

    Solvay process is a method to manufacture

  • 4)

    Carbon dioxide with water changes

  • 5)

    Which of the following is known as azote?

8th Standard Science - Term 2 Electricity Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    When an ebonite rod is rubbed with fur, the charge acquired by the fur is

  • 2)

    The electrification of two different bodies on rubbing is because of the transfer of

  • 3)

    Which of the following a simple circuit must have?

  • 4)

    An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

  • 5)

    Fuse is

8th Standard Science - Term 2 Heat Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Heat is a form of ________.

  • 2)

    Which of the following substances will absorb more heat energy?

  • 3)

    If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

  • 4)

    The process of converting a liquid into a solid is called_________.

  • 5)

    Conduction is the heat transfer which takes place in a____________.

8th Standard Science - Reaching the age of Adolescence Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    The period at which an organism attains sexual maturity is called _____________

  • 2)

    During puberty, the region below the waist become wider in _____________

  • 3)

    Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

  • 4)

    The sperm is produced by ____________

  • 5)

    During menstruation, the progesterone level is ___________

8th Standard Science - Movements Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    Which one of the following organisms lack muscles and skeleton for movement?

  • 2)

    __________ joints are immovable.

  • 3)

    Why do underwater divers wear fin-like flippers on their feet ?

  • 4)

    External ear (pinna )is supported by

  • 5)

    Cockroach moves with the help of its

8th Standard Science - Atomic Structure Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of __________

  • 2)

    Cathode rays are made up of

  • 3)

    In water, hydrogen and oxygen are combined in the ratio of _______by mass.

  • 4)

    Which of the following statements made by Dalton has not undergone any change?

  • 5)

    A negatively charged ion is called ____________, while positively charged ion is called ____________

8th Science - Air Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    Which of the following is true about oxygen?

  • 2)

    Aerated water contains

  • 3)

    Solvay process is a method to manufacture

  • 4)

    Which of the following is known as azote?

  • 5)

    ___________ is called as vital life

8th Science - Term 1 Forces and Pressure 3 Marks and 5 Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    What is called static pressure of the liquid?

  • 2)

    Why do deep sea divers wear special suits while diving?

  • 3)

    Cooking in a place located at a higher altitude is difficult why?

  • 4)

    What is known as atmospheric pressure?

  • 5)

    What are the changes happen while applying a force?

8th Science - Term 1 Light Three Marks and Five Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Define the refractive index of a medium.

  • 2)

    State the Snell’s law of refraction

  • 3)

    Tabulate the images formed by a convex mirror.

  • 4)

    Name the rays which involved in reflection of light.

  • 5)

    Why silver metal is used to make mirror?

8th Science - Term 1 Changes Around Us 3 Marks and 5 Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Explain the role of yeast in making cakes?

  • 2)

    Justify the statement. Burning of fossil fuels is responsible for global warming.

  • 3)

    Is rusting good for Iron materials? Explain.

  • 4)

    Do all the fruits and vegetables undergo browning? Explain.

  • 5)

    Classify the following day to day activities based on chemical reactions by physical contact, solutions of reactants, heat, light, electricity and catalyst.
    a ) burning of crackers during festivals
    b) addition of water to quicklime to make it slaked lime
    c) silver ornaments become black on exposure to air for a long time
    d) copper vessel kept in open air for long time

8th Science - Term 1 Micro Organisms 3 Marks and 5 Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Write the four types of bacteria, based on their shape.

  • 2)

    What are antibiotics?

  • 3)

    What are pathogens?

  • 4)

    How diseases causing micro organisms enter into human beings?

  • 5)

    Why micro organisms are essential for agriculture?

8th Science - Term 1 Organisation of Life 3 Marks and 5 Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    What is respiration?

  • 2)

    Define basal metabolism?

  • 3)

    Define organ

  • 4)

    What is the significance of stem cell?

  • 5)

    Write down the classification of animal tissues.

8th Science - Term 1 Plant Kingdom 3 Marks and 5 Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Write short notes about natural system of classification.

  • 2)

    Write any three economic importance of algae.

  • 3)

    Write the differences between algae and fungi.

  • 4)

    How many classes are there in Bryophytes? What are they?

  • 5)

    Write any four characters of pteridophytes.

8th Science - Term 1 Matter 3 Marks and 5 Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    What is a compound? Give example.

  • 2)

    What are Semi conductorsr-Clve example

  • 3)

    What are inorganic compounds? Give example.

  • 4)

    What are organic compounds? Give example.

  • 5)

    Give some uses of metalloids

8th Science - Term 1 Measurement 3 Marks and 5 Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Define - mole.

  • 2)

    What are the differences between Plane angle and solid angle?

  • 3)

    Give any two uses of super conductors

  • 4)

    When 3 A of current flows through the circuit for 5 seconds, calculate the charge?

  • 5)

    Convert i) 90° into radian, ii) \(\frac { \pi }{ 6 } \) into degrees.

8th Science - Electricity Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    When an ebonite rod is rubbed with fur, the charge acquired by the fur is

  • 2)

    An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

  • 3)

    Fuse is

  • 4)

    _______takes place by rubbing objects together.

  • 5)

    The body which has lost electrons becomes ________

8th Standard Science - Heat Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    Heat is a form of ________.

  • 2)

    If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

  • 3)

    Conduction is the heat transfer which takes place in a____________.

  • 4)

    A calorimeter is a device used to measure the________.

  • 5)

    _______ is defined as the amount of heat required to raise the temperature of 1kg of a substance by 1°C.

8th Standard Science - Forces and Pressure Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    If we apply a force against the direction of motion of a body, then the body will

  • 2)

    Pascal’s law is used in

  • 3)

    The unit of viscosity is

  • 4)

    Rain drops are spherical in nature because of _________

  • 5)

    If the area of contact is greater, then the ______ will be greater.

8th Standard Science - Measurements Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    Which one the following system of units is the British System of unit?

  • 2)

    SI unit of temperature is

  • 3)

    SI unit stands for

  • 4)

    Quantities other than base quantities are called as

  • 5)

    The solid angle is measured in _______.

8th Science - Introduction to the Information Age Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Name the two types of software

  • 2)

    Write a short note on Data.

  • 3)

    Name any four input devices.

  • 4)

    Define Control unit

  • 5)

    Explain the classification of computer.

8th Science - Organisation of Life Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    What is cell differentiation?

  • 2)

    State different types of tissues.

  • 3)

    Mention the function of ‘Alveoli’?

  • 4)

    Name the processes by which air enters and comes out of our lungs?

  • 5)

    Define Metabolism?

8th Science Unit 7 Plant Kingdom Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Define Thallus.

  • 2)

    What is mean by Binomial Nomenclature? give example.

  • 3)

    Write any two characters of dicotyledons.

  • 4)

    Seeds of gymnosperm plants are naked. Why?

  • 5)

    Write any two economic importance of fungi.

8th Science - Micro Organisms Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Write the name of any nitrogen fixing bacteria. 

  • 2)

    Name the bacteria used in the production of vinegar.

  • 3)

    Write the names of any three protozoans.

  • 4)

    Who discovered penicillin?

  • 5)

    Which diseases can be prevented by vaccination?

8th Science Unit 5 Changes Around Us Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Define a chemical reaction.

  • 2)

    Define catalysis

  • 3)

    What happens when an iron nail is placed in copper sulphate solution?

  • 4)

    What is pollution?

  • 5)

    What is Tarnishing? Give an example.

8th Science - Matter Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Name two soft metals that can be cut with a knife.

  • 2)

    Why are bells made of metals?

  • 3)

    What does a chemical symbol represent?

  • 4)

    Mention any three compounds that exist in liquid state.

  • 5)

    Write three properties of metalloids.

8th Science - Term 1 Model Question Paper - by Uma Rajesh - Coimbatore - View & Read

  • 1)

    SI unit of temperature is

  • 2)

    Unit of pressure is

  • 3)

    The distance from the pole to the focus is called

  • 4)

    Symbol of Mercury is

  • 5)

    _______ is used to measure electric current.

8th Science Light Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    The radius of curvature of a spherical mirror is 20 cm. Find its focal length.

  • 2)

    Focal length of a spherical mirror is 7 cm. What is its radius of curvature?

  • 3)

    If two plane mirrors are inclined to each other at an angle of 90°, find the number of images formed.

  • 4)

    Speed of light in air is 3 × 108 ms-1 and the speed of light in a medium is 2 × 108 ms-1. Find the refractive index of the medium with respect to air.

  • 5)

    Refractive index of water is 4/3 and the refractive index of glass is 3/2. Find the refractive index of glass with respect to the refractive index of water.

8th Science Chapter 2 Forces and Pressure Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    A stone weighs 500 N. Calculate the pressure exerted by it if it makes a contact with a surface of area 25 cm2.

  • 2)

    Give two examples to verify that a force changes the shape of a body.

  • 3)

    Give two examples to verify that a force tends to change the static condition of a body.

  • 4)

    Taking out paste from a tooth paste tube is an example to highlight which physical property?

  • 5)

    What do you feel when you touch a nail immediately after it is hammered into a wooden plank? Why?

8th Science Unit 1 Measurement Two Marks Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    What is the unit of mass in FPS system?

  • 2)

    How many base quantities are included in SI system?

  • 3)

    Mention the types of clocks based on their display.

  • 4)

    How many times will the ‘minute hand’ rotate in one hour?

  • 5)

    When 2 coulomb of charge, flows through a circuit for 10 seconds, calculate the current?

8th Science - Term 1 Five Mark Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Write a short note on different types of clocks.

  • 2)

    Describe an experiment to prove that the pressure in a liquid increases with depth.

  • 3)

    What is reflection? Write short notes on regular and irregular reflection?

  • 4)

    Explain the three types of pollution.

  • 5)

    Write a short note on bacteria and its structure.

8th Science - Introduction to the Information Age Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Who is the father of computer?

  • 2)

    Which one of the following is an output device?

  • 3)

    Which one of the following is an input device?

  • 4)

    Pen drive is _____device.

  • 5)

    Fifth generation computer has ___________ Intelligence.

8th Science Chapter 8 Organisation of Life Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Osmosis is the movement of water molecules from a ___________.

  • 2)

    The erythrocyte is placed in _________ solution which has lesser concentration of solutes and greater concentration of water than in the cytoplasm.

  • 3)

    ___________ is a good example for anaerobic respiration.

  • 4)

    _______ nerve is located at the end of the eyes behind the retina.

  • 5)

    The size of the cells are measured in units of __________.

8th Standard Science - Plant Kingdom Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Solanum trilobatum is the binomial name of Thoothuvalai. Here the word ‘Solanum’ refers to

  • 2)

    _________ is an example for colonial form of algae.

  • 3)

    The well-developed sporophytic plant body is seen in

  • 4)

    Penicillin is an antibiotic, which is extracted from________

  • 5)

    The word ‘Taxonomy’ is derived from __________.

8th Standard Science Chapter 6 Micro Organisms Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Micro organisms are measured in ______.

  • 2)

    _______ shows both living and nonliving characteristics.

  • 3)

    ______ is a prokaryotic micro organisms.

  • 4)

    __________ Vaccine is used to cure foot and mouth disease

  • 5)

    Causative organism for rabies is ___________

8th Standard Science - Changes Around Us Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Burning of paper is a______ change.

  • 2)

    ______ metal undergoes rusting.

  • 3)

    Which of the following factor induces electrolysis?

  • 4)

    Dissolved gases like sulphur dioxide, nitrogen oxides in rain water causes______

  • 5)

    ______ is the basic material to manufacture urea.

8th Standard Science Unit 4 Matter Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Matter is composed of

  • 2)

    Which one of metal possess low tensile strength?

  • 3)

    The property which allows metals to be hammered into their sheets is ___________

  • 4)

    The element which possess character of both metals and non metals are called_______.

  • 5)

    Material which has a definite volume but no definite shape and has one free surface is called as ______

8th Standard Science - Light Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Mirrors having a curved reflecting surface are called as

  • 2)

    The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

  • 3)

    Focal length is equal to half of the

  • 4)

    Nature of the images formed by a convex mirror is _________.

  • 5)

    It the angle of incidence is 45°, then the angle of reflection is ______.

8th Standard Science Unit 2 Forces and Pressure Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    If we apply a force against the direction of motion of a body, then the body will

  • 2)

    Pressure exerted by a liquid is increased by

  • 3)

    The unit of viscosity is

  • 4)

    The pressure of a liquid column _____ with the depth of the column.

  • 5)

    The property of _____ of a liquid surface enables the water droplets to move upward in plants.

8th Science Unit 1 Measurement Book Back Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    SI unit of temperature is

  • 2)

    SI unit stands for

  • 3)

    Quantities other than base quantities are called as

  • 4)

    _______ of substance, contains 6.023 × 10+23 atoms or molecules.

  • 5)

    The uncertainty in measurement is called as _______.

8th Standard Science - Organisation of Life One Mark Question with Answer Key - by Chitra - Rajapalayam - View & Read

  • 1)

    __________ is tough and thick white sheath that protect the inner parts of the eye.

  • 2)

    Maintenance of constant internal environment of the body is known as _________

  • 3)

    In the absence of oxygen, glucose is broken down in to ________.

  • 4)

    _____is a thin transparent membrane that is spread across the sclera

  • 5)

    _________million alveoli located at the end of branchial tubes

8th Standard Science - Introduction to the Information Age One Mark Question with Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    Who is the father of computer?

  • 2)

    Which one of the following is an output device?

  • 3)

    Which one of the following is an input device?

  • 4)

    Example of Application program

  • 5)

    Which of the following component are used in fourth generation?

8th Standard Science - Plant Kingdom One Mark Question and Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    The first vascular cryptogams in land plants are ________.

  • 2)

    The well-developed sporophytic plant body is seen in

  • 3)

    Binominal Nomenclature was first introduced in the year of _______

  • 4)

    ______ is used as a food for domestic animals

  • 5)

    Cercospora personata causes _________

8th Science Chapter 6 Micro Organisms One Mark Question and Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    Micro organisms are measured in ______.

  • 2)

    _______ shows both living and nonliving characteristics.

  • 3)

    ______ is a prokaryotic micro organisms.

  • 4)

    Plasmodium belongs to _________ type of protozoan.

  • 5)

    __________ is an acid - loving bacteria

8th Science Unit 5 Changes Around Us One Mark Question and Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    Burning of paper is a______ change.

  • 2)

    The burning of matchstick is an example for chemical reaction based on______

  • 3)

    ______ metal undergoes rusting.

  • 4)

    Rusting of iron is a _________ change.

  • 5)

    Decomposition of limestone is an example for chemical reaction based on __________

8th Standard Science Chapter 4 Matter One Mark Question and Answer - by Chitra - Rajapalayam - View & Read

  • 1)

    Symbol of Mercury is

  • 2)

    A form of non-metal which has high ductility is

  • 3)

    Which one of metal possess low tensile strength?

  • 4)

    The property which allows metals to be hammered into their sheets is ___________

  • 5)

    The non-metal which conduct current is

8th Standard Science - Light One Mark Question with Answer Key - by Chitra - Rajapalayam - View & Read

  • 1)

    Mirrors having a curved reflecting surface are called as

  • 2)

    The distance from the pole to the focus is called

  • 3)

    Focal length is equal to half of the

  • 4)

    If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

  • 5)

    The refractive index of water is

8th Standard Science - Forces and Pressure One Mark Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Which of the following liquids has more viscosity?

  • 2)

    The unit of viscosity is

  • 3)

    Even if we tilt the barometric tube at various angles, the level of mercury will______

  • 4)

    Rain drops are spherical in nature because of _________

  • 5)

    The unit for surface tension is _________

8th Science Chapter 1 Measurement One Mark Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Which one the following system of units is the British System of unit?

  • 2)

    Luminous intensity is the intensity of

  • 3)

    Quantities other than base quantities are called as

  • 4)

    __________ is the measure of the perceived power of light.

  • 5)

    Electric current (I) = ____________

8th Science Term 1 Model Question Paper 3 - by Chitra - Rajapalayam - View & Read

  • 1)

    Quantities other than base quantities are called as

  • 2)

    Which of the following statements about approximation is wrong?

  • 3)

    Pressure exerted by a liquid is increased by

  • 4)

    The refractive index of water is

  • 5)

    An imaginary line perpendicular to the reflecting surface is called

8th Standard Science Term 1 Model Question Paper 2 - by Chitra - Rajapalayam - View & Read

  • 1)

    SI unit stands for

  • 2)

    The unit for surface tension is _________

  • 3)

    The liquid metal used in thermometers is

  • 4)

    Burning of paper is a______ change.

  • 5)

    Limestone contains ______ mainly.

8th Standard Science Term 1 Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Which one the following system of units is the British System of unit?

  • 2)

    SI unit stands for

  • 3)

    Unit of pressure is

  • 4)

    Matter is composed of

  • 5)

    Pencil lead contains

8th Standard Science Term 1 Five Marks Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    List out the base quantities with their units.

  • 2)

    Give the different types of friction and explain each with an example.

  • 3)

    Explain how friction can be minimised.

  • 4)

    Explain the images formed by a concave mirror?

  • 5)

    Speed of light in air is 3 × 108 m s–1 and the refractive index of a medium is 1.5. Find the speed of light in the medium.

8th Standard Science Term 1 Two Marks Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Assertion: The SI system of units is the suitable system for measurements.
    Reason: The SI unit of temperature is Kelvin.
    a. If both assertion and reason are true and reason is the correct explanation of the assertion.
    b. If both assertion and reason are true but reason is not the correct explanation of the assertion.
    c. Assertion is true, but reason is false.
    d. Assertion is false, but reason is true.

  • 2)

    Assertion: Avogadro’s number is the number of atoms in one mole of substance.
    Reason: Avogadro’s number is a constant
    a. If both assertion and reason are true and reason is the correct explanation of the assertion.
    b. If both assertion and reason are true but reason is not the correct explanation of the assertion.
    c. Assertion is true, but reason is false.
    d. Assertion is false, but reason is true.

  • 3)

    Assertion: Broad straps are used in bags.
    Reason: Broad straps last for long life.
    a. If both assertion and reason are true and the reason is the correct explanation of the assertion.
    b. If both assertion and reason are true, but the reason is not the correct explanation of the assertion.
    c. If the assertion is true, but the reason is false.
    d. If the assertion is false, but the reason is true.

  • 4)

    Assertion: Algae are heterotrophic.
    Reason: They don’t have chlorophyll.
    (a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
    (b) If both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
    (c) If Assertion is true but Reason is false.
    (d) If both Assertion and Reason are false.

  • 5)

    Assertion (A): Some algae are living as colonial form.
    Reason (R): Some of the algae are Symbionts.
    a. Both are correct
    b. Both are wrong
    c. A is correct R is wrong
    d. A is wrong R is correct

8th Standard Science Term 1 Model One Marks Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Which one the following system of units is the British System of unit?

  • 2)

    Luminous intensity is the intensity of

  • 3)

    SI unit stands for

  • 4)

    Unit of pressure is

  • 5)

    The unit of viscosity is

8th Standard Science Chapter 9 Introduction to the Information Age Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Who is the father of computer?

  • 2)

    Which one of the following is an input device?

  • 3)

    Fifth generation computer has ___________ Intelligence.

  • 4)

    First generation computer has_________

  • 5)

    Example of Application program

8th Standard Science Chapter 8 Organisation of Life Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    __________ is tough and thick white sheath that protect the inner parts of the eye.

  • 2)

    The process of air passing in and out the lungs is called ___________.

  • 3)

    _______tissues for conduction of nerve impalses

  • 4)

    _________million alveoli located at the end of branchial tubes

  • 5)

    __________ is the structural and functional unit of living organisms.

8th Standard Science Chapter 7 Plant Kingdom Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Solanum trilobatum is the binomial name of Thoothuvalai. Here the word ‘Solanum’ refers to

  • 2)

    The first vascular cryptogams in land plants are ________.

  • 3)

    Binominal Nomenclature was first introduced in the year of _______

  • 4)

    Penicillin is an antibiotic, which is extracted from________

  • 5)

    ______ is the earliest system of classification in plants.

8th Standard Science Chapter 6 Micro Organisms Model Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Micro organisms are measured in ______.

  • 2)

    ______ is a prokaryotic micro organisms.

  • 3)

    Based on shape, the bacteria are classified into _______ types.

  • 4)

    _________is a ball-shaped bacteria.

  • 5)

    Yeast reproduces by __________

8th Standard Science Chapter 5 Changes Around Us Important Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Burning of paper is a______ change.

  • 2)

    The burning of matchstick is an example for chemical reaction based on______

  • 3)

    Brine is a concentrated solution of ______.

  • 4)

    In Haber’s process of producing ammonia ______ is used as a catalyst.

  • 5)

    ______ is responsible for Global warming.

8th Standard Science Chapter 4 Matter Important Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Matter is composed of

  • 2)

    The Pictorial symbol for water given by the alchemists was

  • 3)

    Symbol of Mercury is

  • 4)

    Which one of metal possess low tensile strength?

  • 5)

    The non-metal which conduct current is

8th Standard Science Chapter 3 Light Important Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    Mirrors having a curved reflecting surface are called as

  • 2)

    The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

  • 3)

    The distance from the pole to the focus is called

  • 4)

    If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

  • 5)

    The refractive index of water is

8th Standard Science Chapter 2 Forces and Pressure Important Question Paper - by Chitra - Rajapalayam - View & Read

  • 1)

    If we apply a force against the direction of motion of a body, then the body will

  • 2)

    The unit of viscosity is

  • 3)

    _______is the force acting perpendicularly on any given surface area of a body

  • 4)

    The unit for surface tension is _________

  • 5)

    If the area of contact is greater, then the ______ will be greater.

8th Science Measurement Important Questions - by Chitra - Rajapalayam - View & Read

  • 1)

    Electric current belongs to ______quantities

  • 2)

    SI unit of temperature is

  • 3)

    _______ can be used as memory or storage element in the computers.

  • 4)

    __________ is the measure of the perceived power of light.

  • 5)

    The unit of charge is ______

Class 8th Standard New Syllabus Creative Question In Chapter Forces And Pressure - by Samitha - View & Read

  • 1)

    If we apply a force against the direction of motion of a body, then the body will

  • 2)

    Which of the following liquids has more viscosity?

  • 3)

    The unit of viscosity is

  • 4)

    Name two instruments, which help to measure the pressure of a fluid.

  • 5)

    Define one atmosphere.

8th Standard New Syllabus Chapter Five Important Question - by Samitha - View & Read

  • 1)

    Burning of paper is a______ change.

  • 2)

    The burning of matchstick is an example for chemical reaction based on______

  • 3)

    ______ metal undergoes rusting.

  • 4)

    The pigment responsible for browning of apples is______.

  • 5)

    Which of the following factor induces electrolysis?

Creative Questions For 8th standard Science For Second Chapter - by Samitha - View & Read

  • 1)

    Electric current belongs to ______quantities

  • 2)

    SI unit of temperature is

  • 3)

    Amount of substance is

  • 4)

    Luminous intensity is the intensity of

  • 5)

    Which one of the following devices is used to measure electric current

View all

TN Stateboard Updated Class 8th Science Syllabus

T1 - Measurement

Introduction - System of Units - Temperature - Electric Current ( I ) - Amount of substance - Luminous Intensity - Plane angle - Solid Angle - Clocks - Accuracy in Measurements - Approximation - Rounding off - Numerical Problems

T1 - Forces and Pressure

Introduction - Force - Pressure Exerted By Air - Atmospheric Pressure - Forces In Liquids - Surface Tension - Friction - Viscous Force or Viscosity

T1 - Light

Introduction - Types of Mirrors - Terms Related to Spherical Mirrors - Images Formed By Spherical Mirrors - Applications of Curved Mirrors - Laws of Reflection - Types of Reflection - Multiple Reflections - Refraction of Light - Dispersion

T1 - Matter

Introduction - Why Symbols? - Metals and Non-Metals - Compound

T1 - Changes Around Us

Introduction - Chemical Reactions Based On Physical Contact - Chemical Reactions Based On Solution of Reactants - Chemical Reaction Based On Electricity - Chemical Reactions Based On Heat - Chemical Reactions Based On Light - Chemical Reaction Based On Catalyst - Effects of Chemical Reactions

T1 - Micro Organisms

Introduction - Virus - Bacteria - Fungi - Algae - Protozoa - Uses of Microorganisms In Medicine, Agriculture, Industry and Daily Life - Harmful Microorganisms - Microbes In Food Process - Relationship Between Man and Microbes-Balances, Imbalances and Uses - Prions - Virions

T1 - Plant Kingdom

Introduction - Taxonomy - Outline of Bentham and Hooker’s System of Classification - Binomial Nomenclature - Salient Features of Algae - Fungi - Bryophytes - Pteridophytes - Differences between Bryophytes and Pteridophytes - Gymnosperms - Angiosperms (Closed seeded plants) - Uses of Medicinal plants

T1 - Organisation of Life

Introduction - Organization of Cells and Tissues - Homeostasis - Diffusion - Osmosis - Osmoregulation - Cellular respiration - Metabolism

T1 - Introduction to the Information Age

Generation of Computers - Parts of a Computer - Input Unit - Mouse - Keyboard - Central Processing Unit (CPU) - Control Unit - Arithmetic Logic Unit - Memory Unit - Output Unit - Classification of Computer - Personal computer and its types - Hardware - Software - Types of Software - System Software - Application Software

TN StateboardStudy Material - Sample Question Papers with Solutions for Class 8 Session 2019 - 2020

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