Q. Which of the following is the correct structure for staggered conformation of n-propane?
Q. In the given three conformational isomers which of the following has minimum torsional strain and minimum van der Waals strain.
- All of the above.
Q. In the given conformation, C2 is rotated about C2−C3 bond anticlockwise by an angle of 120∘, then the conformation obtained is:
- Fully eclipsed conformation
- Partially eclipsed conformation
- Gauche conformation
- Staggered conformation
Q. Which of the following represents the staggered conformation with dihedral angle ϕ=60∘ ?
Q. The dihedral angle between the hydrogen atoms of two methyl groups in staggered conformation of ethane is :
Q. Which of the two conformation among the following represents staggered form of ethane?
- 1 and 4
- 2 and 3
- 1 and 3
- 1 and 2
Q. Which is the most stable conformer of ethane?
- Skew conformer
- All conformers are equally stable
- Eclipsed conformer
- Staggered conformer
Q. Choose the correct statement for the following newman projection of n-butane :
- It is an eclipsed conformation
- It is an anti (staggered) conformation.
- It is a skew conformation.
- None of the above
Q. What is the order of potential energies of the given conformers of 1, 2 - dichloroethane?
- I < II < III < IV
- IV < III < II < I
- II < I < III < IV
- II < I < IV < III
Q. Choose the increasing order of stability among the three main conformations (i.e. Eclipse, Anti, Gauche) of 2- Fluoro ethanol.
- Eclipse < Gauche < Anti
- Gauche < Eclipse < Anti
- Eclipse < Anti < Gauche
- Anti < Gauche < Eclipse