The halogen which is most reactive in the free radical halogenation of alkanes under sunlight is

Explain the dry-cleaning of clothes or explain why grease stains can be removed by petrol.

Give the conversion reaction for $methane$ to $ethane$.

What is the number of moles of carbon atoms present in $n$ mole molecules of an alkane if it exhibits five structural isomers?

$CH_3-CH_2-CH_2-CH_3 \xrightarrow{Br_2/hv}$
Major product in the above reaction is

$A$ fuel has the same knocking property as a mixture of $70\%$ isooctane and $30\%$ $n$-heptane. The octane number of the fuel is .............