JEE Chemistry 2023 Question with Solution

Given: Two statements about Clemmensen reduction and Wolff-Kishner reduction are to be checked.

Find: Which statement is true or false based on the solution.

For Statement I, the solution states that Clemmensen reduction uses $\text{Zn(Hg)}$ and $\text{HCl}$ and reduces ketones or aldehydes under acidic conditions. It explicitly concludes:

Hence, Statement I is true.

For Statement II, the solution states that Wolff-Kishner reduction uses $\text{NH}_2\text{NH}_2$ and strong base such as $\text{KOH}$. It further says that the chlorine-containing compound may undergo side reaction in basic medium, so the stated product is not obtained as written. It explicitly concludes:

Hence, Statement II is false.

Therefore, the statement combination is Statement I true and Statement II false. The solution marks The Correct Option is A, which corresponds to "Statement I is false but Statement II is true" in the given options. This is inconsistent with the written explanation.

Since the worked explanation concludes Statement I is true but Statement II is false, the defensible answer from the solution working is option C.

Given: The answer label shown on the page and the written explanation disagree.

Find: Which one should be trusted.

The solution says The Correct Option is A. However, the detailed explanation separately concludes:

1. Statement I is true
2. Statement II is false

Matching this conclusion with the listed options:

• A: Statement I is false but Statement II is true
• B: Both Statement I and Statement II are false
• C: Statement I is true but Statement II is false
• D: Both Statement I and Statement II are true

Only option C matches the explanation text.

Therefore, despite the page label showing A, the correct answer based on the solution working is C.