8th Standard CBSE Science Study material & Free Online Practice Tests - View and download Sample Question Papers with Solutions for Class 8 Session 2019 - 2020 CBSE

Science Question Papers & Study Material

Chemical Effects of Electric Current Model Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    On passing electric current through solution of an electrolyte, the solution experiences

  • 2)

    Electrolytes conduct electricity due to the movement of

  • 3)

    The presence of a small amount of impurities makes water

  • 4)

    Boojho's uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory

  • 5)

    Which of the following metals is used in electroplating to make objects appear shining?

8th Standard CBSE Science Sound Model Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Sound can travel through

  • 2)

    Sound cannot travel through

  • 3)

    Vibrations in a body produce

  • 4)

    Ultrasound has frequency of vibration

  • 5)

    An object is vibrating at 50 hertz. What is its time period?

8th Standard CBSE Science Friction Model Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Four children were asked to arrange forces due to rolling, static and sliding frictions in a decreasing order. Their arrangements are given below. Choose the correct arrangement.

  • 2)

    It is difficult to walk on a wall polished floor because friction between our feet and floor is

  • 3)

    A toy car released with the same initial speed will travel farthest on

  • 4)

    Rolling friction is smaller than

  • 5)

    The fishes swim easily in the water because they have

8th Standard CBSE Science Force and Pressure Model Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    State of motion is described by

  • 2)

    In the circuit shown in figure, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer?

  • 3)

    Which one of the following forces is a contact force?

  • 4)

    Force is due to

  • 5)

    Some mustard oil is kept in the beaker. It will exert pressure

8th Standard CBSE Science Unit 10 Reaching the Age of Adolescence Model Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Adolescents should be careful about what they eat, because

  • 2)

    The release of an egg from an ovary is called

  • 3)

    For the metamorphosis of tadpoles which of the following elements must be available in water?

  • 4)

    Protruding part of the throat in a boy is called

  • 5)

    Sex chromosomes in a female body are

8th Standard CBSE Science Reproduction in Animals Model Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Sets of reproductive terms are given below. Choose the set that has an incorrect combination.

  • 2)

    In humans, the development of fertilised egg takes place in the

  • 3)

    Animals exhibiting external fertilisation produce a large number of gametes. Pick the appropriate reason from the following.

  • 4)

    After fertilisation, the resulting cell which gives rise to a new individual is the

  • 5)

    Reproduction by budding takes place in

8th Standard CBSE Science Unit 8 Cell - Structure and Functions Model Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    The structural and functional unit of life called cell was discovered by

  • 2)

    Out of the following, which animal is unicellular?

  • 3)

    Which of the following is not a plastid?

  • 4)

    Cheek cells do not have

  • 5)

    The thread-like structures present in the nucleus are :

8th Standard CBSE Science Conservation of Plants & Animals Model Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Wild buffalo is an endangered species because

  • 2)

    The place of living of an organism in environment is called

  • 3)

    Snakes are killed in large numbers because

  • 4)

    What do black buck, elephant, python and golden cat together represent in a forest?

  • 5)

    The animals which are exclusively found in a particular area only are called

Combustion and Flame Model Questions - by Abhijeet - Ahmedabad - View & Download

  • 1)

    A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance?

  • 2)

    On placing an inverted tumbler over a burning candle. the flame extinguishes after sometime. This is because of non-availability of

  • 3)

    Choose the incorrect statement from the following. Forest fires are usually due to

  • 4)

    Choose the correct statement about inflammable substance from the following:

  • 5)

    Choose the incorrect statement from the following: A good fuel is one which:

8th Standard CBSE Science Unit 5 Coal and Petroleum Important Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?

  • 2)

    Which of the following is a pair of exhaustible natural resources?

  • 3)

    The World's first oil well was drilled in :

  • 4)

    It was used for street lighting for the first time in London.

  • 5)

    Coal-tar contains about _______ substances:

8th CBSE Science Unit 4 Materials: Metals and Non-metals Important Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Boojho has learnt that non-metals on beating with a hammer are generally broken into pieces.Which of the following is non-metal?

  • 2)

    Materials which can be drawn into wires are called ductile. Which of the following is not a ductile material?

  • 3)

    Which of the following can be beaten into thin sheets?  

  • 4)

    Which is not a property of non-metal?

  • 5)

    Metals can be cut with a knife:

8th CBSE Science Unit 3 Synthetic Fibers and Plastics Important Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Which of the following is a source of rayon?

  • 2)

    Polycot is obtained by mixing

  • 3)

    PET is a

  • 4)

    Which is not made from nylon?

  • 5)

    The strongest fibre is called:

8th Standard CBSE Science Unit 1 Microorganisms Friend and Foe Important Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Yeast is used in the production of

  • 2)

    The following is an antibiotic

  • 3)

    Carrier of malaria-causing protozoan is

  • 4)

    The most common carrier of communicable diseases is

  • 5)

    The bread or idli dough rises because of

8th CBSE Science Unit 1 Crop Production and Management Important Question Paper - by Abhijeet - Ahmedabad - View & Download

  • 1)

    Which of the following statements is not true for organic manure?

  • 2)

    Watering the crops is called

  • 3)

    The system of irrigation where water is supplied drop by drop near the roots of plants, is called

  • 4)

    Planting of seeds is called

  • 5)

    Process of separating grain seeds from the chaff is called:

8th Standard CBSE Science Unit Test - by Renu - View & Download

  • 1)

    Sometimes, manure is added to the soil before tilling because:

  • 2)

    The most reactive metal is

  • 3)

    Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?

  • 4)

    Identify the statement which is true for cells:

  • 5)

    Which endocrine gland is called 'Master gland'?

CBSE Class 8 Science HOTs Questions - by Renu - View & Download

  • 1)

    Given below are statements about the harmful effects of weeds on crop plants.
    (i) They interfere in harvesting.
    (ii) They help crop plants to grow healthily.
    (iii) They compete with crop plants for water, nutrients, space and light.
    (iv) They affect the plant growth.
    Choose the correct combination of statements.

  • 2)

    Which is not a property of non-metal?

  • 3)

    Which of the following is not a constituent of petroleum?

  • 4)

    The structural and functional unit of life called cell was discovered by

  • 5)

    Sex chromosomes in a female body are

8th Standard CBSE Science Revision Test - by Renu - View & Download

  • 1)

    Weeds are the

  • 2)

    Which of the following is very hard?

  • 3)

    Coal-tar contains about _______ substances:

  • 4)

    The jelly-like fluid substance present in cells is called

  • 5)

    Given below are events that lead to pregnancy and development of embryo.
    (i) Fertilisation of egg,
    (ii) Maturation of egg
    (iii) Release of egg
    (iv) Embedding of embryo in uterus
    Which of the following options gives the correct order of sequence in which they occur?

CBSE Grade 8 Science Slip Test Important Questions - by Renu - View & Download

  • 1)

    The term used for the process of separation of grains from chaff is

  • 2)

    Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?

  • 3)

    Exhaustible natural resources are

  • 4)

    The most important function of cell membrane is that it :

  • 5)

    Which among the following hormones controls calcium metabolism in our body?

Friction Important Questions from CBSE Class 8th Science - by Renu - View & Download

  • 1)

    Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be

  • 2)

    To sharpen the blade of a knife by rubbing it against a surface, which of the following will be most suitable?

  • 3)

    Fine powder is poured on the carromboard to

  • 4)

    A boy rolls a rubber ball on a wooden surface. The ball travels a short distance before coming to rest. To make the same, ball travel longer distance before coming to rest, he may

  • 5)

    The fishes swim easily in the water because they have

Sound Important Questions 8th CBSE Science - by Renu - View & Download

  • 1)

    Sound can travel through

  • 2)

    The loudness of sound depends on

  • 3)

    The normal range of vocal cords in women is

  • 4)

    Vibrations in a body produce

  • 5)

    Pitch of sound is determined by its

Important Questions from Chemical Effects of Electric Current - 8th Science - by Renu - View & Download

  • 1)

    When electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates

  • 2)

    Which one of the following solutions will not conduct electricity

  • 3)


    Which of the following solutions will not make the bulb glow in figure?

  • 4)

    Boojho's uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory

  • 5)

    Which of the following metals is used in electroplating to make objects appear shining?

8th Science Some Natural Phenomena Important Questions - by Renu - View & Download

  • 1)

    An electroscope is a device which is used to find if an object is

  • 2)

    Which of the following is not likely to cause tsunami?

  • 3)

    The outermost layer of the earth is called

  • 4)

    Which of the following cannot be charged easily by friction?

  • 5)

    When a glass rod is rubbed with a piece of silk cloth, the rod

8th Science Light Important Questions - by Renu - View & Download

  • 1)

    Part of the eye which controls the entering of light is called

  • 2)

    We can see a non-luminous object when light

  • 3)

    In the figure of the human eye, the cornea is represented by the letter.

  • 4)

    Light is falling on surfaces S1, S2, S3 as shown in figure.

    Surfaces on which the angle of incidence is equal to the angle of reflection is/are

  • 5)

    Which of the following statements is correct regarding rods and cones in the human eye?

8th CBSE Science Stars and The Solar System Important Questions - by Renu - View & Download

  • 1)

    Suppose a new planet is discovered between Uranus and Neptune. Its time period would be

  • 2)

    Which star is nearest to the Earth?

  • 3)

    Which small objects revolve between the orbits of Mars and Jupiter?

  • 4)

    Our galaxy is known as

  • 5)

    Mars appears red due to the presence of large amount of

8th Science Pollution of Air and Water Important Question Paper - by Renu - View & Download

  • 1)

    Which of the following is nota greenhouse gas?

  • 2)

    The type of pollution which is likely to affect Taj Mahal in Agra to a greater extent is

  • 3)

    Highest percentage of air consists of

  • 4)

    The Kyoto protocol is associated with one of the following.

  • 5)

    Which of the following is not a way to conserve water?

8th Science Revision Model Question Paper 1 - by Renu - View & Download

  • 1)

    Weeds are the

  • 2)

    Planting of seeds is called

  • 3)

    Which of these do not have a regular cell structure?

  • 4)

    Which of the following is not a common property of plastics?

  • 5)

    The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is

CBSE Class 8 Science Mock Test - by Renu - View & Download

  • 1)

    Yeast is used in the production of

  • 2)

    Rayon is different from synthetic fibres because:

  • 3)

    Purest form of carbon is

  • 4)

    When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to

  • 5)

    Four children were asked to arrange forces due to rolling, static and sliding frictions in a decreasing order. Their arrangements are given below. Choose the correct arrangement.

8th Standard CBSE Science Important Model Question Paper - by Renu - View & Download

  • 1)

    Weeds are the

  • 2)

    PET is a

  • 3)

    Two charged objects are brought close to each other. Choose the most appropriate statement from the following options

  • 4)

    Which of the following cannot be charged easily by friction?

  • 5)

    The change in converging power of an eye lensis caused by the action of

Friction - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    Four children were asked to arrange forces due to rolling, static and sliding frictions in a decreasing order. Their arrangements are given below. Choose the correct arrangement.

  • 2)

    Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be

  • 3)

    The force of friction always

  • 4)

    Friction is due to

  • 5)

    Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play

Force And Pressure - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    State of motion is described by

  • 2)

    The pressure exerted by liquid due to increase in depth

  • 3)

    In the circuit shown in figure, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer?

  • 4)

    Force due to the charged particles is known as

  • 5)

    Which one of the following forces is a contact force?

Reaching The Age Of Adolescence - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    Adolescents should be careful about what they eat, because

  • 2)

    The faulty functioning of an endocrine gland can make a person very short or very tall. This gland is

  • 3)

    The male hormone is

  • 4)

    The release of an egg from an ovary is called

  • 5)

    Given below are events that lead to pregnancy and development of embryo.
    (i) Fertilisation of egg,
    (ii) Maturation of egg
    (iii) Release of egg
    (iv) Embedding of embryo in uterus
    Which of the following options gives the correct order of sequence in which they occur?

Reproduction In Animals - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    In human beings, the correct sequence of events during reproduction is

  • 2)

    Sets of reproductive terms are given below. Choose the set that has an incorrect combination.

  • 3)

    In humans, the development of fertilised egg takes place in the

  • 4)

    Aquatic animals in which fertilisation occurs in water are said to be

  • 5)

    After fertilisation, the resulting cell which gives rise to a new individual is the

Cell : Structure And Functions - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    The structural and functional unit of life called cell was discovered by

  • 2)

    Choose the correct statement with respect to unicellular organisms.

  • 3)

    Out of the following, which animal is unicellular?

  • 4)

    Which of the following is not a plastid?

  • 5)

    Which of the following is not a cell?

Conservation Of Plants & Animals - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    Bison is an endemic fauna of Pachmarhi biosphere reserve.

  • 2)

    Wild buffalo is an endangered species because

  • 3)

    Which one of the following changes may occur due to desertification?

  • 4)

    Deforestation increases the level of one of the following the atmosphere.

  • 5)

    Snakes are killed in large numbers because

Combustion And Flame - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    Which one of the following has the highest calorific value?

  • 2)

    On placing an inverted tumbler over a burning candle. the flame extinguishes after sometime. This is because of non-availability of

  • 3)

    The substance expected to have the highest ignition temperature out of the following is

  • 4)

    Coal burns with

  • 5)

    Shyam was cooking potato curry on a chulha. To his surprise. he observed that the copper vessel was getting blackened from outside. It may be due to

Coal And Petroleum - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    Which of the following is a pair of exhaustible natural resources?

  • 2)

    Exhaustible natural resources are

  • 3)

    Which substance is formed by the carbonisation of dead vegetation?

  • 4)

    Which of the following is not a constituent of petroleum?

  • 5)

    The product(s) obtained by destructive distillation of coal is/are

Materials Metals And Nonmetals - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    Which of the following statements is correct?

  • 2)

    Which of the following reacts with cold water vigorously?

  • 3)

    Which of the following non-metals reacts and catches fire on exposure to air?

  • 4)

    Which metal is present in haemoglobin?

  • 5)

    Which of the following is very hard?

Synthetic Fibres And Plastics - Important Questions Model Paper In 8th Science - by Renu - View & Download

  • 1)

    The material similar to silk in appearance is

  • 2)

    Which of the following is non-biodegradable?

  • 3)

    The material which is commonly used for making kitchen containers is

  • 4)

    PET is a

8th Science Model Question Paper - by Renu - View & Download

  • 1)

    Yeast is used in the production of

  • 2)

    The following is an antibiotic

  • 3)

    The bread or idli dough rises because of

  • 4)

    The process of conversion of sugar into alcohol is called

  • 5)

    Under unfavourable conditions, microorganisms form a _______________ around themselves.

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CBSE Education Study Materials

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

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