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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The important step in Cannizzaro's reaction is the intermolecular shift of:

(a) proton

(b) H-atom

(c) hydride ion

(d) hydronium ion

Subtopic:  Name Reaction |
 66%
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Pinacole is:

(a) 2,3-dimethyl-2,3-butandiol

(b) 3,3-dimethyl-2-propanone

(c) 3-methyl butan-2-ol

(d) none of the above

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 73%
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Benedict's solution provides:

(a) Ag+

(b) Cu2+

(c) Ba2+

(d) Li+

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 76%
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Acetaldehyde undergoes self condensation in presence of aluminium ethoxide to give ethyl acetate. This reaction is called:

(a) Perkin reaction

(b) Tischenko's reaction

(c) Cannizzaro's reaction

(d) Aldol condensation

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 52%
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An aldehyde which undergoes Cannizzaro's reaction and reduces Schiff's reagent but does not reduce Fehling's solution is:

(1) CH3CHO

(2) HCHO

(3) C6H5CHO

(4) salicylaldehyde

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 70%
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Which can be reduced to corresponding hydrocarbon by Zn/HCl ?

(a) Butan-2-one

(b) Acetic acid

(c) Acetamide

(d) Ethyl acetate

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 79%
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The IUPAC name of the CH3COCH(CH3)2 is:

(1) 4-methyl isopropyl ketone

(2) 3-methyl-2-butanone

(3) isopropylmethyl ketone

(4) 2-methyl-3-butanone

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 80%
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Major product maybe

1.     

 2.  

3.     

 4.  

Subtopic:  Acid Derivatives - Preparation, Properties & Uses |
 64%
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