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

1. 60$°$ 

2. 180$°$

3. 0$°$ 

4. 120$°$

In the following, the most stable conformation of n-butane is                

1.  

2.   

3.  

4. 

The most stable configuration of n-butane will be                

1. skew boat

2. eclipsed

3. gauche 

4. staggered-anti

The dihedral angle between the hydrogen atoms of two methyl groups in staggered conformation of ethane is:

1. 120° 

2. 180°

3. 90° 

4. 60°

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

1. Chair form             

2. Boat form

3. Half chair form          

4. Planar form

In the given conformation C₂ is rotated about C₂-C₃ bond anticlockwise by an angle of 120° then the conformation obtained is

1. Fully eclipsed conformation

2. Partially eclipsed conformation

3. Gauche conformation

4. Staggered conformation

In butane, which of the following forms has the lowest energy?

(1) Gauche form

(2) Eclipsed form

(3) Staggered form

(4) None of these

What is the relationship between the two given molecular structures?

Which type of strain is present in fully eclipsed conformation of butane?

(1) Angle strain            

(2) Steric strain

(3) Both (1) and (2)         

(4) Neither (1) and (2)

Which of the following representations of ethane depicts its non-staggered conformation?

1.		2.
3.		4.	None of these