Staggered Conformation

Q. In the given conformation, $C_2$ is rotated about $C_2-C_3$ bond anticlockwise by an angle of ${120}^{\circ }$, then the conformation obtained is:

1. Fully eclipsed conformation
2. Partially eclipsed conformation
3. Gauche conformation
4. Staggered conformation

Q. Which is the most stable conformer of ethane?

1. Skew conformer
2. Eclipsed conformer
3. Staggered conformer
4. All conformers are equally stable

Q. Which of the two conformation among the following represents staggered form of ethane?

1. 1 and 4
2. 2 and 3
3. 1 and 2
4. 1 and 3

Q. Which of the following is the correct structure for staggered conformation of n-propane?

1. 
2. 
3. 
4. 

Q. What is the order of potential energies of the given conformers of 1, 2 - dichloroethane?

1. I < II < III < IV
2. IV < III < II < I
3. II < I < III < IV
4. II < I < IV < III