2025 · Q98
Which of the following reagents can cause oxidation of an alcohol?
- 1Hot concentrated H₂SO₄
- 2Alkaline KMnO₄
- 3Acidified K₂Cr₂O₇
- 4Acidified KMnO₄ Select the answer using the code given below.
general-sciencechemistry
- A1, 2 and 3
- B1, 3 and 4
- C2 and 3 only
- D4 only
Explanation
Alkaline KMnO4 and acidified K2Cr2O7 are standard oxidising agents that convert alcohols to carbonyl compounds and acids, so statements 2 and 3 are correct. Hot concentrated H2SO4 acts as a dehydrating agent toward alcohols (forming alkenes), not as an oxidant, so statement 1 is incorrect. Hence the answer is 2 and 3 only.