1.

Assertion : During a chemical reaction, total moles remains constant. Reason: During a chemical reaction, total mass remains constant.

Answer»

Statement-1 is TRUE, statement-2 is true and statement-2 is CORRECT explanation for statement-1.
Statement-1 is true, statement-2 is TRUEAND statement-2 is NOT the correct explanation for statement-1
Statement-1 is false, statement -2 is true.
Statement -1 is true, statement-2 is false.

Answer :D


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