1.

Assertion Zinc and iron decompose steam whereas copper and mercury do not. Reason A metal can displace hydrogen from wateronly if its reduction potential is less than that of hydrogen.

Answer»

Both A and R are TRUE and R is the CORRECT EXPLANATION of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
Both A and R arefalse.

Answer :A


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