Compound (X) with molecular formula `C_(3)H_(8)O` is treated with acidified potassium dichromate to form a product (Y) with molecular formula `C_(3)H_(6)O`. (Y) does not form a shining silver mirror on warming with ammoniacal `AgNO_(3)`. (Y) when treated with an aqueous solution of `NH_(2)CONHNH_(2).HCl` and sodium acetate, gives a product (Z). The structure of (Z) is

Options

A. `CH_(3)CH_(2)CH=N-NHCONH_(2)`
B. `CH_(3)-underset( CH_(3))underset(|)(C ) =N-CONH_(2)`
C. `CH_(3)-underset( CH_(3))underset( |)(C ) = N -CONHNH_(2)`
D. `CH_(3)CH_(2)CH=N-CONHNH_(2)`

Explanation

Compound A is primary alcohol because on oxidation it is given an aldehyde 'B' which form shining mirror with ammonical silver nitrate ( Tollen's reagent ) .
Thus, compound A is
`CH_(3) -CH_(2)-CH_(2)OH ( C_(3)H_(8)O)`