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JEE CHEMISTRY MCQ: ALDEHYDES & KETONES & CARBOXYLIC ACIDS
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Carboxylic acids dimerise due to
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Correct option: C
Intermolecular hydrogen bonding
The correct answer is C (Intermolecular hydrogen bonding) because carboxylic acids form dimers through intermolecular hydrogen bonds between the carbonyl oxygen and the hydroxyl hydrogen of two molecules.
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By passing water gas through an electric discharge at low pressure, we get:
Addition of alcohols to aldehydes and ketones takes place in presence of dry gas because it
(i) Protonates the oxygen of the carbonyl compounds
(ii) Increases the electrophilicity of the carbonyl carbon
(iii) Removes the excess moisture from the reaction
(iv) Helps the reaction to move in the forward direction Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as Which one of the following reactions is a condensation reaction? The number of aldehyde isomers for will be Which of the following compounds does not have a carboxyl group?
(i) Protonates the oxygen of the carbonyl compounds
(ii) Increases the electrophilicity of the carbonyl carbon
(iii) Removes the excess moisture from the reaction
(iv) Helps the reaction to move in the forward direction Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as Which one of the following reactions is a condensation reaction? The number of aldehyde isomers for will be Which of the following compounds does not have a carboxyl group?