Assertion :Thermonuclear fusion reactions may become the source of unlimited power for the mankind. Reason: A single fusion event involving isotopes of hydrogen produces more energy than energy from nuclear fission of $_{93}^{235} U$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
When fusion is achieved by raising the temperature of the system so that particles have enough kinetic energy to overcome the coulomb repulsive behaviour, it is called thermonuclear fusion. It is clean source of energy but energy released in one fusion is much less than a single uranium fission.

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Assertion :Thermonuclear fusion reactions may become the source of unlimited power for the mankind. Reason: A single fusion event involving isotopes of hydrogen produces more energy than energy from nuclear fission of 23593U.

Assertion :Thermonuclear fusion reactions may become the source of unlimited power for the mankind. Reason: A single fusion event involving isotopes of hydrogen produces more energy than energy from nuclear fission of $_{93}^{235} U$ .