The cylindrical shape of an alkyne is due to 

(1) three sigma C-C bonds

(2) three π C-C bonds

(3) two sigma C-C and one π C-C bonds

(4) one sigma C-C and two π C-C bonds

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 84%
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Maximum enol content is in 

1. 

2.

3.

 

4. 

Subtopic:  Structural Isomers |
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Which order for basic character of amine is correct for following compounds?

1. 3>1>2>5>4              2. 3>2>1>5>4

3. 3>1>2>4>5              4. 3>2>1>4>5

 

Subtopic:  Acidic & Basic Character |
 67%
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Which of the following is the most stable carbocation

1. 

2. 

3. CH2=CH-CH2

4. CH2=CH

Subtopic:  Reaction Intermediates ; Preparation & Properties |
 57%
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In the following compounds

The order of acidity is

1. III>IV>I>II              2. I>IV>III>II

3. II>I>III>IV              4. IV>III>I>II

 

Subtopic:  Acidic & Basic Character |
 84%
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 The carbon-carbon bond length in the compounds 

follows the order

1. III<II<I<IV

2. IV<I<II<III

3. I<II<III<IV

4. I<IV<III<II

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 88%
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In the following compounds,

The order of basicity is

1. IV>I>III>II

2. III>I>IV>II

3. II>I>III>IV

4. I>III>II>IV

Subtopic:  Acidic & Basic Character |
 56%
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Which of the following happens to be the carbanion with highest stability?

 

Subtopic:  Reaction Intermediates ; Preparation & Properties |
 81%
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The IUPAC name of the following compounds

 is

1. 1-Bromocyclohexane carboxylic acid

2. 3-Bromocyclohexanoic acid

3. 3-Bromohepatnoic acid

4. 3-Bromocyclohexane carboxylic acid

Subtopic:  Nomenclature |
 53%
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Trans-2-butene on bromination using CS2 gives which dibromoderivative

1. (R), (R)-2,3-dibromobutane

2. (S),(S)-2,3-dibromobutane

3. Racemic-2,3-dibromobutane

4. Meso-2,3-dibromobutane

Subtopic:  Structural Isomers |
 52%
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