The ${S_{N}2}$ reaction of an asymmetric carbon compound always gives:

Assertion : $CHCl_3$ is stored in dark bottles.
Reason : $CHCl_3$ is oxidised in dark.

The organic halide,which does not undergo hydrolysis by $S_{N}1$ mechanism is

In the above reaction,the maximum Saytzeff product will be obtained when $X$ is:

Which of the following compounds has the fastest $S_N2$ reaction rate?

Compound $(A), \, C_8H_9Br,$ gives a white precipitate when warmed with alcoholic $AgNO_3.$ Oxidation of $(A)$ gives an acid $(B), \, C_8H_6O_4.$ $(B)$ easily forms anhydride on heating. Identify the compound $(A).$