Which of the following compounds will not be obtained as a product in the above reaction?

When the fuel mainly contains ...............,knocking occurs more in the engine.

$Ph^{-}MgCl \xrightarrow{\text{Hydrolysis}} \text{Product}$
Product will be

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

$n$-Butane on monochlorination under photochemical conditions gives an optically active compound "$P$". "$P$" on further chlorination gives dichloro compounds. The number of dichloro compounds obtained (ignore stereoisomers) is:

An alkane forms isomers if the number of carbon atoms is at least