Question

Assertion(A): Zinc reacts with sulphuric acid to form zinc sulphate and hydrogen gas.

Reason(R) : Zinc is more reactive than hydrogen.

• A. Both A and R are true and R is the correct explanation of A.
• B. Both A and R are true but R is not the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true.

Answer 1

The correct option is A Both A and R are true and R is the correct explanation of A.

In a displacement reaction, a highly reactive element can only displace a less reactive element from its solution. Since zinc is more reactive than hydrogen, it displaces hydrogen from sulphuric acid and hydrogen gas is evolved.

$Zn\left(s\right)+H_{2}S{O}_4\left(g\right)\to ZnS{O}_4\left(s\right)+H_2$