The dihedral angle between two C-H bonds in the staggered conformation of ethane  is            

1. 60° 

2. 180°

3. 0° 

4. 120°

Subtopic:  Conformational Isomers |
 60%
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Isomers of a substance must have the same-         

1. Structure

2. Physical properties

3. Chemical properties

4. Molecular formula

Subtopic:  Structural Isomers |
 83%
From NCERT
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But-2-ene exhibits cis-trans-isomerism due to

1. rotation around C2-C3 double bond

2. rotation around C3-Csigma bond

3. rotation around C1-C2 bond

4. restricted rotation around C=C bond

Subtopic:  Stereo Isomers |
 66%
From NCERT
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How many stereoisomers does this molecule have?           

CH3CH=CHCH2CHBrCH3

1. 4       

2. 6       

3. 8       

4. 2

Subtopic:  Stereo Isomers |
 55%
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The general formula for cycloalkanes is:

1. CnH2n+2 

 2. CnH2n

3. CnH2n-2  

4. CnH2n+1

Subtopic:  Nomenclature |
 64%
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If optical rotation produced by the compound (i) is +52° then that produced by that the compound (ii) is:

1. -52°

2. +52°

3. 0°

4. unpredictable

Subtopic:  Stereo Isomers |
 78%
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Rotation of plane polarized light can be measured by:

1. manometer

2. calorimeter

3. polarimeter

4. viscometer

Subtopic:  Stereo Isomers |
 91%
From NCERT
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Which one of the following can exhibit cis-trans-isomerism?

1. CH3-CHCl-COOH

2. H-C≡C-Cl

3. Cl-CH=CHCl

4. ClCH2-CH2Cl

Subtopic:  Stereo Isomers |
 86%
From NCERT
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Geometrical isomers differ in :

1. Position of functional group.

2. Position of atoms.

3. Length of carbon chain.

4. Spatial arrangement of atoms.

Subtopic:  Nomenclature |
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Fisher projection indicates:

1. horizontal substituents above the plane

2. vertical substituents above the plane

3. both horizontal and vertical substituents below the plane

4. both horizontal and vertical substituents above the plane

Subtopic:  Stereo Isomers |
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