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Nuclear Fusion

The process b...

Question

The process by which energy is released in sun is

A

Chemical reaction

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B

Nuclear fission

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C

Nuclear fusion

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D

None of these

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Solution

The correct option is C
Nuclear fusion

Nuclear fusion is a reaction in which two atomic nuclei fuse together and releasing a large amount of energy. Nuclear fusion happens only at very high temperatures.

In Sun, hydrogen atoms fuse together to produce energy and helium.

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Similar questions

Q. Assertion :The nuclear fusion reaction releases less energy than the fission reaction. Reason: The nuclear fusion reaction takes place in the sun and other stars.

Q. During nuclear reactions (fission or fusion), energy is released.

Q. What is the nuclear fuel in the sun ? Describe the process by which energy is released in the sun. Write the equation of the nuclear reaction involved.

Q. (a) Differentiate between nuclear fission and nuclear fusion.
(b) Which of the two, nuclear fission and nuclear fusion, is made use of :
(i) for the production of electricity ?
(ii) for making a hydrogen bomb ?
(c) Which produces more energy : nuclear fusion or nuclear fission ?
(d) Calculate the energy released in joules when 5 g of a material is completely converted into energy during a nuclear reaction.
(e) How much is this energy in MeV ? (Speed of light = 3

\times 10^{8} m / s)

Assertion : Nuclear fission is always accompanied by release of energy.
Reason : Nuclear fission is a chain process.

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