On treatment with chlorine in the presence of sunlight,toluene gives the product

The product formed on the reaction of ethyl alcohol with bleaching powder is:

Identify the Finkelstein reaction from the following.

Two isomers $(A)$ and $(B)$ with molar mass $184 \ g/mol$ and elemental composition $C, 52.2 \ \%; H, 4.9 \ \%$ and $Br, 42.9 \ \%$ give benzoic acid and $p$-bromobenzoic acid,respectively,on oxidation with $KMnO_4$. Isomer '$A$' is optically active and gives a pale yellow precipitate when warmed with alcoholic $AgNO_3$. Isomer '$A$' and '$B$' are,respectively .... .

The rate of dehydrohalogenation of which one among the following is the least?

An alkyl halide may be converted into an alcohol by