Reaction of a carbonyl compound with one of the following reagents involves nucleophilic

addition followed by the elimination of water. The reagent is:

1. a Grignard reagent

2. hydrazine in presence of feebly acidic solution

3. hydrocyanic acid

4. sodium hydrogen sulphite

Subtopic:  Aldehydes & Ketones: Preparation & Properties | Isomers & Reaction Mechanism |
 60%
NEET - 2015
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The reaction by which benzaldehyde cannot be prepared?

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 81%
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Predicts the products in the given reaction,

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 69%
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Which product is formed when acetone is treated with excess ethanol in the presence of hydrochloric acid?
1.    2.
3.   4.  
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 69%
From NCERT
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Which of the following reactions will not result in the formation of carbon-carbon bonds ?

1. Reimer-Tiemann reaction

2. Cannizaro reaction

3. Wurtz reaction

4. Friedel-Crafts acylation

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 74%
From NCERT
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Which one of the following on treatement with 50% aqueous sodium hydroxide yields the corresponding alcohol and acid ?

(1) C6H5CH2CHO

(2) C6H5CHO

(3) CH3CH2CH2CHO

(4) CH3-C||O-CH3

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 77%
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Consider the following compounds :

The Correct decreasing order of their reactivity towards hydrolysis is : 

(1) (ii) > (iv) > (iii) > (i)

(2) (i) > (ii) > (iii) > (iv)

(3) (iv) > (ii) > (i) > (iii)

(4) (ii) > (iv) > (i) > (iii)

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 69%
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A carbonyl compound reacts with hydrogen cyanide to form  cyanohydrin which on hydrolysis forms a racemic mixture of a-hydroxy acid. The carbonyl compound is  :

(1) acetaldehyde

(2) acetone

(3) diethyl ketone

(4) formaldehyde

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 74%
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Self-condensation of two moles of ethyl acetate in the presence of sodium ethoxide yields :

(1) ethyl butyrate

(2) acetoacetic ester

(3) methyl acetoacetate

(4) ethyl propionate

Subtopic:  Aldehydes & Ketones: Preparation & Properties | Name Reaction |
 59%
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An ester that gets hydrolyzed most easily under alkaline conditions is:

1.  2.  
3.   4.  
 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 73%
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