1.

Assertion: atomicmassesof elements arewholenumbers . Reason: atoms of thesameelement existasisotopes .

Answer»

BothassertionandReasonaretrueandReasonis correctexplanationof assertion
bothassertionand Reasonis NOTTHE correctexplanationof assertion
Assertionis falsebutreasonis TRUE
Assertionis truebut reason is FALSE

Answer :C


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