Arrange the following radicals in their increase order of stability and give the reason of your answer.

What are left- and right- circularly polarised lights? Draw suitable diagrams for them.

How are disubstituted cyclohexanes different from monosubstituted cyclohexanes with reference to the isomerism? Draw the two chair conformations for each of the following disubstituted cyclohexanes. Draw also the cis and trans isomers and indicate the more stable isomer.

i) cis-Bromo-1-methylcyclohexane

ii) trans-2-Butyl-1-isopropylcyclohexane

iii) cis-4-Ethyl-1-hydroxycyclohexane

Carry out the following conversions as indicated.

a) Fischer form to: i) Staggered and Eclipsed Sawhorse forms and

ii) Staggered and Eclipsed Newman forms

b) Flying wedge form to Fischer forms

Draw the meso isomers of the following compounds.

Predict the product and write the mechanism.

What is pseudoasymmetry? Explain with the help of a suitable example.