अभिक्रिया के दिये गये क्रम में (X), (Y) एवं (Z) अभिकर्मकों को पहचानिए।
`CH-= CH overset(X) to CH_(3) CHO overset(Y) CH_(3) CH( OH) CH_(3) overset(Z) to CH_(3) COCH_(3)`

Options

A. `X = H_(2) SO _(4), Y= H _(2) O //OH^(-) , Z = PCl _(5), ` उष्मा
B. `X = HNO _(3), Y = Na _(2) CO_(3) , Z = H _(2) SO _(4),` उष्मा
C. `X = H _(2) SO _(4) //HG ^(2+) , Y = PCl _(5)//H _(2) O, Z= K_(2) Cr _(2) O _(7)//OH ^(-)`
D. `X = H _(2) SO _(4) //H g ^(2+) , Y = CH _(3) Mg Br //H _(2) O, Z = K _(2) C r _(2) O_(7) //H^(+)`

Answer

D

Explanation

`{:(CH = CH overset(H _(2) SO _(4)) underset( H g ^(2+))to CH _(3) CHO overset(CH _(3) Mg Br) underset(H _(2) O ) to HC _(3) CH (OH) CH _(3)), (" "(X) " "(Y) K_(2) Cr _(2) O_(7)//H^(+) darr(Z)), (" "CH _(3) COCH_(3)):}`