Which of the following has most acidic proton?

1. CH3COCH3                             

2. (CH3)2C=CH2

3. CH3COCH2COCH3                   

4. (CH3.CO)3CH

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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Which one of the following can be oxidised to the corresponding carbonyl compound?   [2004]

1. 2-hydroxy propane

2. Ortho-nitro phenol

3. propane

4. 2-methyl-2-hydroxy propane

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 70%
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Dry distillation of barium salt of Hexane-1,6-dicarboxylic acid gives:

1. 

2. 

3. 

4. 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 65%
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Polarisation of electrons in acrolein may be written as             

1. Cδ+H2=CH-CH=Oδ-

2. Cδ+H2=Cδ+H-CH=O

3. Cδ+H2=CH-CH=Oδ+

4. Cδ+H2=CH-Cδ+H=O

 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 81%
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Consider the following reaction;

CH3Br + Mg EtherAHCHOBHOHC

compound C is:

1. acetic acid

2. acetaldehyde

3. ethyl alcohol

4. formic acid

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 65%
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The conversion of CH3OH to CH3COOH can be brought in by:

1. K2Cr2O7/H+                           

2. CO + Rh

3. KMnO4                                   

4. H3PO4

Subtopic:  Carboxylic Acids: Preparation & Properties |
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Benzaldehyde and acetaldehyde can be distinguished by:

1. iodoform test

2. 2,4 - DNP test

3. NH3 reaction

4. Wolff-Kishner's reduction

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 76%
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Fehling's solution is:

1. Acidified copper sulphate solution

2. Ammoniacal cuprous chloride solution

3. Copper sulphate, Rochelle salt + NaOH

4. None of the above

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 75%
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Which compounds will not reduce Fehling's solution?

1. Methanal                                 

2. Ethanal

3. Trichloroethanal                       

4. Benzaldehyde

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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Acetaldehyde normally reacts with                

1. only electrophiles

2. only nucleophiles

3. only free radicals

4. both electrophiles and nucleophiles

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 55%
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