How many primary carbon atoms are there in the compound,

(a) 6               (b) 2

(c) 4               (d) 3

 

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 90%
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The (R)- and (S)-enantiomers of an optically active compound differ in

(1) their solubility in a chiral solvent

(2) their reactivity with a chiral reagent

(3) their optical rotation of plane polarised light

(4) their melting points

Subtopic:  Stereo Isomers |
 92%
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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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