HARD
Earn 100

Draw a flow chart showing Exhaustible and Inexhaustible resources and their use.

Important Questions on Coal and Petroleum

MEDIUM
List any three differences between nuclear fission reaction and nuclear fusion reaction.
EASY
Which of the following is not an example of a bio-mass energy source?
EASY
By what name is biogas popularly known in India?
EASY

Write names of any two energies produced in ocean.

EASY
Write the name of two elements used as nuclear energy.
MEDIUM
Write any four differences between nuclear fusion and nuclear fission.
EASY
Which one of the following is an example of Biomass energy source.
EASY
Nowadays bio-diesel is used in transportation vehicles as an alternate to diesel. Write two advantages of this measure.
MEDIUM
Explain how is nuclear energy generated in power reactors. How is electricity produced from nuclear energy?
MEDIUM
Write a short note on: Nuclear Energy
EASY
Write down the process of evolution of fossil fuels on Earth.
EASY
 State two ways to prevent the rusting of iron.
EASY
Which of the following is not an example of a biomass energy source?
MEDIUM

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
Useful substance in preparation of freezing mixture is 
EASY

Write down the two benefits of use of solar energy.

MEDIUM
Which of the following is the Bio/Gobar gas?
MEDIUM
Which liquid is called ‘black gold’?