Acidified KMnO4 can be used:

PYQ SSC JE (Junior Engineer) 2023

1. A.

   to get alcohol directly from carboxylic acids

2. B.

   to get carboxylic acids directly from alcohol

3. C.

   to get formic acid from formaldehyde

4. D.

   to get glycerol from glucose

Attempted by 16 students.