Assertion :Nuclear fission is a chain reaction. Reason: Extra neutrons generated during fission further attacks nuclei of fissionable material.

S

is correct but

E

is wrong

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S

is wrong but

E

is correct

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Both

S

and

E

are correct and

E

is correct explanation of

S

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Both

S

and

E

are correct but

E

is not correct explanation of

S

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Solution

The correct option is C Both $S$ and $E$ are correct and $E$ is correct explanation of $S$
Nuclear fission is a chain reaction.
Extra neutrons generated during fission further attacks nuclei of fissionable material.
Thus a given nucleus after fission gives neutrons which then attack another fissionable nucleus.
This in turn releases new neutrons which attacks another nucleus.
Thus, the process continues.
Thus, Both S and E are correct and E is correct explanation of S.

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