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Melting and Freezing

How do fusion...

Question

How do fusion and fission differ?

A

In fission, energy is released by splitting large nuclei, whereas in fusion, small nuclei fuse together.

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B

Fusion occurs with light elements; fusion occurs with heavy elements.

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C

Fusion requires a great deal of energy; fission releases a great deal of energy.

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D

All of the above are correct.

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Solution

The correct option is A
In fission, energy is released by splitting large nuclei, whereas in fusion, small nuclei fuse together.

The basic difference between fission and fusion is that in fission, energy is released by splitting large nuclei, whereas in fusion, small nuclei fuse together.

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Q. Assertion :Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion Reason: For heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei it decreases with increasing Z.

Q. Statement 1: Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion and
Statement II: For heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei it decrease with increasing Z

Q. Assertion :More energy is released in fusion than fission. Reason: More number of nucleons take part in fission.

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

Q. (a) Differentiate between nuclear fission and nuclear fusion.
(b) Which of the two, nuclear fusion 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 doing a nuclear reaction.
(e) How much is this energy in MeV? (Speed of light = 3 × 10⁸ m/s)

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