NEET Chemistry Aldehydes Ketones and Carboxylic Acids questions

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Topic Question Set

Q 1 :
Identify the suitable reagent for the following conversion. [2025]

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(i) ${NaBH}_{4}$ , (ii) $H^{+} / H_{2} O$
$H_{2} / Pd - {BaSO}_{4}$
(i) ${LiAlH}_{4}$ , (ii) $H^{+} / H_{2} O$
(i) $AlH {(i Bu)}_{2}$ , (ii) $H_{2} O$

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(4)

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Esters are reduced to aldehydes with DIBAL–H.

Q 2 :
Identify the correct reagents, that would bring about the following transformation: [2024]

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(i) $H_{2} O / H^{+}$ (ii) ${CrO}_{3}$
(i) ${BH}_{3}$ (ii) $H_{2} O_{2} / \bar{O} H$ (iii) PCC
(i) ${BH}_{3}$ (ii) $H_{2} O_{2} / \bar{O} H$ (iii) alk. ${KMnO}_{4}$ (iv) $H_{3} O^{+}$
(i) $H_{2} O / H^{+}$ (ii) PCC

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(2)

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Q 3 :
The following conversion is known as [2023]

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Stephen reaction
Gattermann–Koch reaction
Etard reaction
Rosenmund reaction

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(4)

Rosenmund reaction :

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Q 4 :
The intermediate compound X in the following chemical reaction is [2021]

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(2)

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Q 5 :
Identify compound X in the following sequence of reactions. [2020]

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(3)

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