The structure of cis-bis (propenyl) ethene is:

1. 

2. 

3. 

4. 

But-2-ene exhibits cis-trans-isomerism due to

1. rotation around C₂-C₃ double bond

2. rotation around C₃-C₄ sigma bond

3. rotation around C₁-C₂ bond

4. restricted rotation around C=C bond

How many stereoisomers does this molecule have?           

CH₃CH=CHCH₂CHBrCH₃

1. 4       

2. 6       

3. 8       

4. 2

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

Rotation of plane polarized light can be measured by:

1. manometer

2. calorimeter

3. polarimeter

4. viscometer

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

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

Which of the following compounds is not chiral ?

1. DCH2CH2CH2Cl

2. CH3CH2CHDCl

3. CH3CHDCH2Cl

4. CH3CHClCH2D

Which of the following pairs are enantiomers?                

1. 

2. 

3. 

4. 

Which of the following is an optically active compound?        

1. 1-butanol 

2. 1-propanol

3. 2-chlorobutane 

4. 4-hydroxybutanal