Conformation

According to Bayer's strain theory which is highly stable

• Cyclohexane

• Cycloheptane

• Cyclopentane

• Cyclobutane

The Energy required to rotate n- butane molecule about carbon - carbon bond is called

• Rotational energy

• Torsional energy

• Enantiomeric energy

• Translational energy

Infinity of intermediate conformations are called

• Skew conformations

• Staggered conformations

• Eclipsed conformations

• Gauche conformations

In gauche conformations methyl groups are

• 60° apart

• 0°apart

• 90°apart

• 180° apart

The atoms or groups which behind the plane of paper are shown by

• Thick lines

• Normal lines

• Zig-zag lines

• Dotted lines

Flagpole H in boat conformation of cyclohexane are pointing towards each other at

• C1 and C4

• C3 and C5

• C2 and C6

• C3 and C4

Which of the following does not affect on the relative stability of conformation

• Angle strain

• Steric strain

• Torsional strain

• Resonance strain

Which one of the following associated with Torsional strain

• inductive effect

• Dihedral angle

• Repulsion of like charge

• Effective angle

Which of the following cycloalkanes has the highest ring strain

• Cyclobutane

• Cyclohexane

• Cyclopentane

• Cyclopropane

Gauche conformation is less stable due to

• Hydrogen bonding

• Covalent bonding

• Vander Waal's repulsion

• Torsional strain