Back to ALDEHYDES & KETONES & CARBOXYLIC ACIDS
JEE CHEMISTRY MCQ: ALDEHYDES & KETONES & CARBOXYLIC ACIDS
1
Medium
1 of 1
Analyzing
+4 | -1
Assertion (A) Aldehydes and ketones, both react with
Tollens’ reagent to form silver mirror.
Reason (R) Both, aldehydes and ketones contain a hydrogen attached to a carbonyl group.
Tollens’ reagent to form silver mirror.
Reason (R) Both, aldehydes and ketones contain a hydrogen attached to a carbonyl group.
View answer and explanation
Correct option: D
A and R are false
Option D (A and R are false) is correct because aldehydes, not ketones, react with Tollen's reagent, and the reason is that aldehydes have a hydrogen attached to the carbonyl group, while ketones do not.
More Questions from ALDEHYDES & KETONES & CARBOXYLIC ACIDS
Practice All Chapter MCQs →
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? Carboxylic acids dimerise due to The number of aldehyde isomers for will be
(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? Carboxylic acids dimerise due to The number of aldehyde isomers for will be