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Asked in NUMS 2019 (cancelled sitting) 2019

Which of the following can be oxidized to an aldehyde?

Correct answer: D. Ethanol

  • A. 2-Ethanoic acid
  • B. 2-Ethanoate
  • C. Diethyl ether
  • D. Ethanol

Explanation

Ethanol can be oxidized to produce acetaldehyde, which is an aldehyde. The oxidation can be carried out using an oxidizing agent such as potassium permanganate or chromium trioxide. The other options, 2-Ethanoic acid, 2-Ethanoate, and Diethyl ether, do not contain a functional group that can be oxidized to form an aldehyde.

This question appeared on the NUMS 2019 (cancelled sitting) paper, which you can sit online with every answer explained.

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About Alcohols

Alcohols contain a hydroxyl group attached to a saturated carbon atom and are classified as primary, secondary or tertiary. Their nomenclature, hydrogen bonding, acidity, oxidation, dehydration, reaction with sodium and conversion to haloalkanes are covered, along with the distinction between alcohols and phenols, where the hydroxyl group is attached directly to an aromatic ring.

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