Question

The Fischer projection of D-erythrose is shown below.

D-Erythrose and its isomers are listed as P, Q, R, and S in Column-I. Choose the correct relationship of P, Q, R, and S with D-erythrose from Column II.

• A. $P\to 2,Q\to 1,R\to 1,S\to 3$
• B. $P\to 2,Q\to 3,R\to 3,S\to 1$
• C. $P\to 2,Q\to 3,R\to 2,S\to 2$
• D. $P\to 3,Q\to 1,R\to 1,S\to 2$

Answer 1

The correct option is A $P\to 2,Q\to 1,R\to 1,S\to 3$


P is identical and Q is diastereoisomer to D-erythrose.


R is diastereoisomer and S is enantiomer to D-erythrose