Question
Identify $$(X), (Y)$$ and $$(Z)$$ reagents in the given sequence of reactions.
\[CH\equiv CH\xrightarrow{X}C{{H}_{3}}CHO\] \[\xrightarrow{Y}C{{H}_{3}}CH\left( OH \right)C{{H}_{3}}\] \[\xrightarrow{Z}C{{H}_{3}}COC{{H}_{3}}\]
A.
$$X = {H_2}S{O_4},Y = \frac{{{H_2}O}}{{O{H^ - }}},$$ $$Z = PC{l_5},{\text{heat}}$$
B.
$$X = HN{O_3},Y = N{a_2}C{O_3},$$ $$Z = {H_2}S{O_4},{\text{heat}}$$
C.
$$X = \frac{{{H_2}S{O_4}}}{{H{g^{2 + }}}},Y = \frac{{PC{l_5}}}{{{H_2}O}},$$ $$Z = \frac{{{K_2}C{r_2}{O_7}}}{{O{H^ - }}}$$
D.
$$X = \frac{{{H_2}S{O_4}}}{{H{g^{2 + }}}},Y = \frac{{C{H_3}MgBr}}{{{H_2}O}},$$ $$Z = \frac{{{K_2}C{r_2}{O_7}}}{{{H^ + }}}$$
Answer :
$$X = \frac{{{H_2}S{O_4}}}{{H{g^{2 + }}}},Y = \frac{{C{H_3}MgBr}}{{{H_2}O}},$$ $$Z = \frac{{{K_2}C{r_2}{O_7}}}{{{H^ + }}}$$