Define the term "nuclear fission".

Important Questions on Sources of Energy

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 13

Explain the difference between nuclear fission and nuclear fusion reaction with examples. Give reason why the energy due to fusion is not being used to meet our day-to-day energy needs.

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 14

With the help of a labelled diagram, describe the working of a solar water heater.

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 15

Naturally occurring Uranium, U-238 is not fissionable, why? How is it processed to make it usable as a fuel in a nuclear reactor?

EASY

10th CBSE

IMPORTANT

Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 16

What is the greenhouse effect? State two advantages and two disadvantages of this effect.

EASY

10th CBSE

IMPORTANT

Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 17

What is nuclear waste? What are the hazards of nuclear waste to the living beings? How is nuclear waste disposed off?

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 18

What is a nuclear reactor? When is it said to have become critical? Write the function of boron rods in a nuclear reactor.

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 19

What is meant by the term chain reaction? Explain with the help of a diagram how a chain reaction in a bunch of U-235 nuclei takes place during nuclear fission.

MEDIUM

10th CBSE

IMPORTANT

Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 20

Draw a labelled diagram of solar water heater. What modification will be made in the box type solar cooker to enable it to be used as a solar water heater?