GATE CY 2017 Question Paper (05-Feb-2017) (Shift 1)

The structures of the intermediate [P] and major product Q formed in the following reaction sequence are

Hydration of fumaric acid gives malic acid as shown below. Assume that addition of water takes place specifically from A face or B face. The correct statement pertaining to stereochemistry of malic acid formed is

Hydroboration of 2-butyne with $(C_6{H}_{11}{)}_{2}BH$ yields the intermediate U, which on treatment with $I_2$ and $NaOMe$ at $-78°C$, gives product V. The structures of U and V are

The structures of the major products W and X in the following synthetic scheme are

The major products Y and Z in the following reaction sequence are