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Hydrogen nucleus combines to form helium...

Hydrogen nucleus combines to form helium then energy is released.
Binding energy/nucleon of `He` is greater than hydrogen.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
(a) A nuclear reaction in which two lighter nuclei are fused together to form a heavier nuclei is called nuclear fusion. In such a process, more stable nuclei come into existence and binding energy per nucleon increases. Fusion reactions are highly exothermic because of less of mass during fusion. e.g.
`._1^2 H + ._1^(2) H rarr ._2^(4) He + 24.9 MeV`.
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Knowledge Check

  • Statement-1 : Energy is released in the nuclear fusion of hydrogen nuclei to form helium nuclei Because Statement-2 : Binding energy per nucleon of helium greater than hydrogen.

    A
    Statement-1 is true, Statement-2 is ture, statement-2 is a correct explanation for statement -1
    B
    Statement-1 is true, statement-2 is true, statement-2 is not a correct explanation for statement-1
    C
    Statement-1 is ture, statement-2 is false
    D
    Statement-2 is false, statement-2 is true

  • The value of binding energy per nucleon is

    A
    more for light nuclei
    B
    more for heavy nuclei
    C
    more for medium nuclei
    D
    equal for all nuclei

  • Nuclear energy is released in fission since binding energy per nucleon is

    A
    smaller for fission fragments than for parent nucleus
    B
    the same for fission fragments and parent nucleus
    C
    larger for fission fragements than for parent nucleus
    D
    sometimes large and sometimes smaller

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    Two deuterons udnergo nuclear fusion to form a Helium nucleus. Energy released in this process is : (given binding energy per nucleon for deuteron = 1.1 MeV and for helium = 7.0 MeV)

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