Day 34: MH HSC Class 12 Chemistry

Solid State. This type asked 2 times: Jul 2024, Jul 2025. This one: Jul 2025

Transition and Inner Transition Elements. This type asked 2 times: Feb 2024, Jul 2025. This one: Jul 2025

Alcohols, Phenols and Ethers. This type asked 2 times: Mar 2014, Feb 2025. This one: Feb 2025

Aldehydes, Ketones and Carboxylic Acids. This type asked 2 times: Mar 2016, Feb 2025. This one: Feb 2025

Q.1.viii

The highest acidic compound among the following is _____. (The four options are drawn structures — see the figure.)

1. A.
   a benzene ring with $\mathrm{{-}COOH}$ and, two carbons away (meta), $\mathrm{{-}OH}$ (3-hydroxybenzoic acid)
2. B.
   a benzene ring with $\mathrm{{-}COOH}$ and, on the adjacent carbon, $\mathrm{{-}NH_2}$ (anthranilic acid)
3. C.
   a benzene ring with $\mathrm{{-}COOH}$ only (benzoic acid)
4. D.
   a benzene ring with $\mathrm{{-}COOH}$ and, at the para position, $\mathrm{{-}OCH_3}$ (4-methoxybenzoic acid)

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Aldehydes, Ketones and Carboxylic Acids. This type asked 2 times: Feb 2024, Feb 2025. This one: Feb 2025