Question

Assertion (A) : A piece of Zinc metal gets reddish brown coating when kept in copper sulphate solution for some time.
Reason (R) : Copper is more reactive metal than Zinc.

• 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 C

Assertion (A): True. When zinc metal is placed in copper sulfate (CuSO4) solution, zinc displaces copper due to its higher reactivity, leading to the formation of a reddish-brown coating of copper on the zinc surface.
Reason (R): False. Copper is less reactive than zinc, not more reactive. Zinc is placed higher than copper in the reactivity series of metals, which is why zinc displaces copper from its sulfate solution.
Conclusion: The assertion is correct because the reaction takes place as described, but the reason provided is incorrect.