Which β-keto acid shown will not undergo decarboxylation ?

(a)              (b) 

(c)       (d) 

Subtopic:  Carboxylic Acids: Preparation & Properties |
 72%
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 H3O (A) , Product (A) obtained is-

1. 

2. 

3. 

4.

Subtopic:  Acid Derivatives - Preparation, Properties & Uses |
 51%
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 +R-CH2-NH2THFK2CO3 (A) 

                                                      (71%)

In above reaction identify major product (A) of the reaction:

(a)     (b) 

(c)        (d) 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 60%
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A key step in the hydrolysis of acetamide in aqueous acid proceeds by nucleophilic addition of-

1. H3O+ to                          

2.  H2O to   

3. H3O+ to                          

4. HO- to 

Subtopic:  Isomers & Reaction Mechanism |
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Which is the major product of the following reaction ?

H2Sproduct

1.         

3.      

4.      

5. 

 

Subtopic:  Acid Derivatives - Preparation, Properties & Uses |
 52%
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Compound having molecular formula C3H6O may be:

(a) cyclic ether

(b) carbonyl compound

(c) unsaturatd ether or unsaturatd alcohol

(d) all of the above

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 84%
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Which of the following would undergo aldol condensation?

(a) CCl3CHO               (b) 

(c) CH3CH2CHO          (d) HCHO

Subtopic:  Name Reaction |
 92%
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What is the name of a reagent that reacts with both acetaldehyde and ketone?

1. Ammoniacal AgNO3

2. Rochelle salt

3. 2,4-Dinitrophenylhydrazine

4. All of the above

Subtopic:  Isomers & Reaction Mechanism |
 65%
From NCERT
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What is the structural difference between an aldehyde and a ketone?

1. α-H-atom

2.  H-atom combined with carbonyl group 

3. OH and carbonyl group

4. None of the above

Subtopic:  Isomers & Reaction Mechanism |
 69%
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Ketones are less reactive than aldehydes because:

(a) C=O group is less polar in ketones

(b) of electromeric effect

(c) of steric hindrance to the attacking reagent 

(d) none of the above

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 81%
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