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%
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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 |
 64%
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Which of the following may exist as enantiomers?

1.
2. \(\mathrm{CH}_2=\mathrm{CHCH}_2 \mathrm{CH}_2 \mathrm{CH}_3 \)
3.
4.
Subtopic:  Stereo Isomers |
 68%
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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 |
 65%
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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%
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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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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 |
 90%
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The cylindrical shape of an alkyne is due to the presence of- 

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 |
 80%
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What is decreasing order of basicity of 1°, 2° and 3° ethyl amines and ammonia in aqueous medium?          

1. NH3>C2H5NH2>(C2H5)2NH>(C2H5)3N

2. (C2H5)3N>(C2H5)2NH>C2H5NH2> NH3

3. (C2H5)3NH>C2H5NH2>(C2H5)3N>NH3

4. (C2H5)2NH>(C2H5)3N>C2H5NH2>NH3

Subtopic:  Acidic & Basic Character |
 58%
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