1.

(A) Law of conservation of mass is invalid for nuclear fission fusion and disintegration. (R) The law proposes that mass if neither creatednor destroyed in a reaction.

Answer»

If both (A) and (R) are CORRECT and (R) is the correct EXPLANATION of (A).
If both (A) and (R) are correct but (R) is not the correct explanation of (A).
If (A) is correct but (R) is WRONG.
If (A) is wrong but (R) is correct.

Answer :B


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