Which one of the following is the stable structure of cyclohexatriene?

1. Chair form             

2. Boat form

3. Half chair form          

4. Planar form

Subtopic:  Conformational Isomers |
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Meso tartaric acid is optically inactive due to the presence of:

1. molecular symmetry

2. molecular asymmetry

3. external compensation

4. two asymmetric carbon atoms

Subtopic:  Stereo Isomers |
 66%
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​ . Where X and Y are

1. Positional isomers             

2. Functional isomers

3. Metamers                   

4. Tautomers

Subtopic:  Structural Isomers |
 56%
From NCERT
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The property by virtue of which a compound can turn the plane of polarization of light is known as:

1. Photolysis              

2. Phosphorescence

3. Optical activity           

4. Polarization

Subtopic:  Stereo Isomers |
 73%
From NCERT
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The molecular formula of a saturated compound is C2H4Br2. This formula permits the existence of:

1. Functional isomers       

2. Optical isomers

3. Positional isomers        

4. Cis-trans isomers

Subtopic:  Structural Isomers |
 63%
From NCERT
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Which of the following may exist in enantiomorphs?

1.                   

2. CH2=CHCH2CH2CH3 

3.                  

4. 

Subtopic:  Stereo Isomers |
 67%
From NCERT
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The total number of isomers could be obtained from the alkane, C6H14 is-

1. Four                   

2. Five

3. Six                    

4. Seven

Subtopic:  Structural Isomers |
 64%
From NCERT
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CH3-CHCl-CH2-CH3 has a chiral center. Which one of the following represents its R-configuration? 

1.

2. 

3. 

4. 

Subtopic:  Stereo Isomers |
 66%
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The number of primary carbon atoms in the following compound are:

1. 6 2. 2
3. 4 4. 3
Subtopic:  Hybridisation & Structure of Carbon Compounds |
 86%
From NCERT
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4-methylpent-2-ene is  achiral because it has:

1. a centre of symmetry 

2. a plane of symmetry 

3. symmetry at C 4 carbon

4. both centre and a plane of symmetry 

Subtopic:  Stereo Isomers |
 54%
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