Question

Which of the following are the compound(s) that do not give Tollen's test?

• A. A, B
• B. C, D
• C. A, C
• D. B, D

Hint:

Acetals and ketals do not react with Tollen's reagent because they do not have an aldehyde functional group. Only aldehydes give a positive Tollen's test.

Answer 1

The Correct Option is A

Step 1: Understanding Tollen's test.
Tollen's test is used to identify aldehydes, which reduce the Tollen's reagent to silver, forming a mirror-like coating. Compounds without an aldehyde group (such as acetals) will not give this test.
Step 2: Analyzing the options.
In option (A) and (B), both compounds are acetals (i.e., they do not have an aldehyde group). Therefore, they will not give the Tollen's test.
Step 3: Conclusion.
Hence, the correct answer is (1), A and B do not give Tollen's test.