Consider the following reactions : (i) Glucose + ROH dryHCI →...

Consider the following reactions :

(i) Glucose $+ ROH\overset{dryHCI}{\to}Acetal\mathop{\to}_{{\left({CH}_{3}CO\right)}_{2}}^{xeq . of}$ acetyl derivative

(ii) Glucose $\overset{Ni / {H}_{2}}{\to}A\mathop{\to}_{{\left({CH}_{3}CO\right)}_{2}O}^{yeq . of}$ acetyl derivative

(iii) Glucose $\mathop{\to}_{{\left({CH}_{3}CO\right)}_{2}O}^{zeq . of}$ acetyl derivative '$x$' , '$y$' and '$z$' in these reactions are respectively.