The main component of marsh gas is ......... .

Which alkane is secreted by cockroaches to attract the opposite gender of its species?

The $B.P.$ of branched-chain alkanes as compared to straight-chain alkanes is:

Identify the major product in the following reaction:
$Ph-CH_2-CH(CH_3)_2 \xrightarrow[hv]{Cl_2 (1 \ mol)}$ Major product

Propane molecule on chlorination under photochemical conditions gives two dichloro products,$x$ and $y$. Amongst $x$ and $y$,$x$ is an optically active molecule. How many trichloro products (consider only structural isomers) will be obtained from $x$ when it is further treated with chlorine under photochemical conditions?

In which of the following is the $Baeyer$ angular strain maximum?