The photochemical chlorination of alkanes is initiated by .....

With which of the following substances does $CH_2N_2$ (diazomethane) react differently?

Write the reaction for the preparation of ethane from the following:
$(i)$ Ethene
$(ii)$ Ethyl chloride

In which of the following reactions is the product a hydrocarbon?

Consider the isomers of the hydrocarbon with molecular formula $C_5H_{10}$. These isomers do not decolourise $KMnO_4$ solution. These isomers are subjected to chlorination with chlorine in the presence of light to give monochloro compounds. The total number of monochloro compounds (structural isomers only) formed from all these isomers is . . . . . . .

Paraffin is soluble in .........