A pair of stereoisomers might be classified in various ways. Which of the following statement are true with respect to pairs of stereoisomers ?
(a) They might be configurational isomers
(b) They might be diastereomers
(c) They might be constitutional isomers
(d) They might be tautomers .
(e) They might be conformational isomers
(f) They might be enantiomers
(g) They might be positional isomers

Options

A. a, b, c, e
B. b, d, e, f, g
C. a, b, f
D. a, b, c, f

Answer

C

Explanation

Stereoisomers are actually configurational isomers. Thus, they might be diastereomers (geometrical/optical) and enantiomers (mirror image non-super imposeable). Stereoisomers are not constitutional isomers, thus, can.t be tautomers, positional. Since, conformational isomers deals with bond rotation without change in configuration, thus, stereoisomers can.t be conformational isomers.