Question

Which is the most suitable reagent for the following transformation?

• A. alkaline $KMnO_{4}$
• B. $I_{2}/NaOH$
• C. Tollen's reagent
• D. $CrO_{3}/CS_{2}$

Answer 1

Answer: (B)

Reagent (2) can do the conversion as alcohol will convert into methyl ketone and thus will show iodoform test followed by reaction with dil. $H^{+}$ .
Reagent (1) Converts
Reagent (3) Used for aldehydes.
Reagent (4) Converts alcohol to aldehydes