Stereochemical Aspects of Nucleophilic Substitution Reactions of Haloalkanes and Haloarenes

What is the stereochemical result of ${\mathrm{S}}_{\mathrm{N}}^1$ and ${\mathrm{S}}_{\mathrm{N}}^2$ reactions?

The optically inactive compound is 

The number of asymmetric carbon atoms in glucose are

Define Nicole prism.

Which of the following crystals are used to convert ordinary light to plane polarised light?

Which of the following method is not used in the resolution of a racemic mixture?

Which of the following compound does not show the optical isomerism?

Which of the following compounds will give racemic mixture on nucleophilic substitution by ${\mathrm{OH}}^{-}$ ion?

Optically active $2$-butanol does not racemise on treatment with a solution of $\mathrm{KOH}$. Explain why?.

The specific rotation of a pure enantiomer is $+10°$ . The observed rotation, if it is isolated from a reaction with 30% racemisation and 70% inversion is

Predict the major product of the following reaction.

A sample of $(+)-2-$chloropentane has an optical purity of $36\%$. What % age of this sample is $(-)-2-$chloropentane ?