MEDIUM
Earn 100

Change one word to make the sentence true.

The property due to which materials are light and heavy is expressed as texture.

Important Questions on Sorting of Materials into Groups

EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Write down the process of evolution of fossil fuels on Earth.
MEDIUM
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Write any four differences between nuclear fusion and nuclear fission.
MEDIUM
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
List any three differences between nuclear fission reaction and nuclear fusion reaction.
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
By what name is biogas popularly known in India?
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Nowadays bio-diesel is used in transportation vehicles as an alternate to diesel. Write two advantages of this measure.
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Write the name of two elements used as nuclear energy.
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Name two uses biogas.
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Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Which one of the following is an example of Biomass energy source.
MEDIUM
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Explain how is nuclear energy generated in power reactors. How is electricity produced from nuclear energy?
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Uranium is used to obtain:
MEDIUM
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Write a short note on: Nuclear Energy
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials

Write down the two benefits of use of solar energy.

EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
 State two ways to prevent the rusting of iron.
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Which of the following is not an example of a biomass energy source?
MEDIUM
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials

Which of the following are physical changes?

(a) Melting of iron metal        (b) Rusting of iron

(c) Bending of an iron rod     (d) Drawing a wire of iron metal

MEDIUM
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Useful substance in preparation of freezing mixture is 
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
Which of the following is not an example of a bio-mass energy source?
EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials

Write names of any two energies produced in ocean.

EASY
Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
A magnet attracts :
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Science>Chemistry>Sorting of Materials into Groups>Properties of Materials
We cannot see anything through an opaque material.