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

Geometrical isomers differ in :

1. Position of functional group.

2. Position of atoms.

3. Length of carbon chain.

4. Spatial arrangement of atoms.

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 correctly describes the two species shown?

1. Resonating structures

2. Tautomers

3. Geometrical isomers

4. Optical isomers

Which of the following compounds is not chiral ?

1. DCH2CH2CH2Cl

2. CH3CH2CHDCl

3. CH3CHDCH2Cl

4. CH3CHClCH2D

Which of the following pairs represents chain isomerism?

Number of monochlorinated products (excluding stereo-isomers) obtained from the given reaction are :

Which of the following pairs are enantiomers?                

1. 

2.  

3. 

4. 

How many structural isomers are possible for the compound having molecular formula C₃H₅Br₃?

Which of the following is an optically active compound?        

1. 1-Butanol 

2. 1-Propanol

3. 2-Chlorobutane 

4. 4-Hydroxybutanal