CBSE 2023 · Region 5 · Set 1 · Q34

(a)OR(b)

A neutral organic compound 'X' (Molecular formula $\displaystyle \mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}$ ) on reacting with acidified $\displaystyle \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ gives an organic compound 'Y' which is acidic in nature. 'X' reacts with 'Y' on warming in the presence of conc. $\displaystyle \mathrm{H}_{2} \mathrm{SO}_{4}$ to give a sweet smelling compound 'Z'.

(i)

Identify 'X', 'Y' and 'Z'.

(ii)

Write the chemical equations for the reactions in the conversion of ($\displaystyle 1$) 'X' to 'Y' and ($\displaystyle 2$) 'X' to 'Z'.

(iii)

State the role of ($\displaystyle 1$) acidified $\displaystyle \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ in the conversion of 'X' to 'Y' and ($\displaystyle 2$) conc. $\displaystyle \mathrm{H}_{2} \mathrm{SO}_{4}$ in the reaction of 'X' and 'Y'.

(iv)

Name the reaction which occurs when 'Z' reacts with an alkali.