Q.

i. In (M), Cl and CH, are below the plane, so they are placed on vertical line in Fischer projection as shown in structure (M).ii. In (N), CH, and Cl are below the plane, so they are placed on vertical line as shown in Fischer structure N. So M and N are non-mirror image steroisomers.(b) Convert Sawhorse structure of (O) into Fischer projection formula.Hence (IVI) and (O) are identical.(c) Convert Newman projection of (P) into Sawhorse and then into Fischer formulaHence (M) and (P) are enantiomers.(d) Convert Newman projection of (Q) into Sawhorse and then into Fischer formula.Cl and CH, are below the plane and are placed on vertical line in Fischer formula.So (M) and (O are not identical. So statements (a), (b) and (c) are correct. Statement (4) is wrong. The Fischer projection formula of (M), (N), (O), (P) and (a) are represented as below