Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

General Knowledge

Topic

Chemistry

Question:

Answer these questions selecting the appropriate option given below:

Assertion (A): Zinc can easily displace copper on reacting with a solution of copper sulphate.

Reason (R) : Copper is more reactive metal as compared to Zinc.

Options:

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

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

Correct Answer:

A is true but R is false.

Explanation:

The correct answer is option 3. A is true but R is false.

Assertion (A): Zinc can easily displace copper on reacting with a solution of copper sulphate. - This statement is true. Zinc is more reactive than copper. When metallic zinc comes in contact with a copper sulfate solution, a displacement reaction occurs. Zinc displaces copper from the copper sulfate solution, forming zinc sulfate and elemental copper metal.

Reason (R): Copper is more reactive metal as compared to Zinc. - This statement is false. As mentioned earlier, zinc is actually the more reactive metal compared to copper.

Here's the key concept:

Reactivity of metals is inversely related to their position in the reactivity series (activity series). Metals higher in the series are more reactive than those below them.

Zinc sits above copper in the reactivity series, making it more reactive and capable of displacing the less reactive copper ions in copper sulfate solution.