Tag: towards green energy

Questions Related to towards green energy

Which of the following will produce lesser pollution problems?

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  1. Nuclear fission

  2. Nuclear fusion

  3. Both will produce the same amount of pollution

  4. Nothing can be decided

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Correct Option: B

The fusion reactions occur at

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. low pressures

  2. high temperature

  3. extremely high temperature

  4. high temperature and low pressures

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Correct Option: C

Which of the following isotopes of Uranium is unstable?

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. U-234

  2. U-235

  3. U-238

  4. All the above

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Correct Option: B

An atom bomb is based on the principle of.

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. nuclear fission

  2. nuclear fusion

  3. the liquid drop model

  4. none of these

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Correct Option: A

The process by which the percentage of U-235 in U-238 is increased, is called

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. fission

  2. fusion

  3. chain reaction

  4. enrichment

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Correct Option: D

The energy released due to loss in mass during the process of nuclear fission and fusion is called:

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. hydro energy

  2. electrical energy

  3. nuclear energy

  4. geothermal energy

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Correct Option: C
Explanation:

The energy released due to a loss in mass during the process of nuclear fission and fusion is called nuclear energy. In both these processes, the loss in mass gets converted into energy in accordance with Einstein's mass-energy relation $E=mc^2$.

The most common fuel for a fission reaction in a nuclear reactor is:

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  1. Uranium $230$

  2. Uranium $238$

  3. Californium $238$

  4. Thorium $234$

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Correct Option: B
Explanation:

Uranium $238$ is used in nuclear reactor for fission reaction.

Energy produced in nuclear power plants is example of:

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  1. controlled nuclear fission.

  2. uncontrolled nuclear fission.

  3. controlled nuclear fusion.

  4. uncontrolled nuclear fusion.

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Correct Option: A
Explanation:

Nuclear fission carried out in a nuclear power plant is a controlled chain reaction which can be controlled to stop if required.

What is the biggest advantage of nuclear energy?

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  1. It is clean.

  2. Huge amount of energy is produced.

  3. The radioactive emissions from a nuclear power plant are healthy.

  4. Nuclear power plant can be easily set up in urban areas.

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Correct Option: B
Explanation:

The yield of nuclear energy is enormous and hence it has extraordinary potential as an energy source.

Health hazards related to nuclear radiations are:

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  1. They can cause cancer.

  2. They can cause deformity in the body.

  3. They can damage the genes of a person.

  4. All of the above.

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Correct Option: D
Explanation:

Nuclear radiations are extremely harmful to human health. They can cause:

1. The radiations can affect body cells and this may cause cancer.
2. The radiations have the capability to damage the genes of a person and this can be transferred to the next generation.
3. The radiations can cause permanent incurable deformity in human body.