Which of the following has the highest octane number?

Identify the straight-chain hydrocarbon that is an isomer of $3-$ethyl$-2-$methylhexane.

The general formula of paraffin is:

Which products are obtained from the electrolysis of an aqueous mixture of sodium ethanoate and sodium propanoate?

The relative reactivity of $1^o H$,$2^o H$,and $3^o H$ in bromination reaction has been found to be $1 : 82 : 1600$ respectively. In the reaction $CH_3-CH(CH_3)-CH_3 \text{ (excess)} + Br_2$ $\xrightarrow{hv} CH_3-C(Br)(CH_3)-CH_3 \text{ (A)} + CH_3-CH(CH_3)-CH_2-Br \text{ (B)}$,the percentage yields of the products $(A)$ and $(B)$ are expected to be:

Halogenation of alkanes is: