A student has been given a compound " x " of molecular formula- C_6 H_7 N. ' x ' is sparingly soluble in water. However, on addition of dilute…

A student has been given a compound " $\displaystyle x$ " of molecular formula- $\displaystyle \mathrm{C}_6 \mathrm{H}_7 \mathrm{~N}$. ' $\displaystyle x$ ' is sparingly soluble in water. However, on addition of dilute mineral acid, ' $\displaystyle x$ ' becomes soluble in water. ' $\displaystyle x$ ' when treated with $\displaystyle \mathrm{CHCl}_3$ and $\displaystyle \mathrm{KOH}(\mathrm{alc})$, ' y ' is produced. 'y' has a specific unpleasant smell. On treatment with benzenesulphonyl chloride, ' $\displaystyle x$ ' gives a compound ' $\displaystyle z$ ' which is soluble in alkali. The number of different " H " atoms present in ' z ' is:-