Identify the reagent $R$ used in the following reaction:
$CH_3-CH(CH_3)-CH_3 \xrightarrow{R} CH_3-C(Br)(CH_3)-CH_3$

How many isomeric vicinal-dihalides are possible for the compound having molecular formula $C_3H_6Cl_2$?

Hexane yields different products under different conditions. Provide three such reactions.

When isobutane is treated with $Cl_2$ in sunlight,the major product is

Petroleum ether can be used as

Prepare the following products from methane $(CH_4)$: $(i)$ Methyl chloride,$(ii)$ Carbon black,$(iii)$ Carbon dioxide,$(iv)$ Methanol,$(v)$ Methanal,$(vi)$ Carbon monoxide,$(vii)$ Dihydrogen,$(viii)$ Methyl iodide,$(ix)$ Methyl bromide.