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MCQ on stereochemistry: Page-5

Diastereomers will have
(A) Similar physical properties

(A) P,S

(B) Q,S

(C) P,R

(D) Q,R

A pure single compound with chiral carbons has shown optical activity as zero. The compound may be

(A) Dextro

(B) Levo

(C) Meso

(D) Racemic

How many optical isomers are possible for the structure given below
3-bromobutanol

(B) 2

(B) 4

(C) 3

(D) 8

(R)-Glyceraldehyde is

(A) Dextro

(B) Levo

(C) Meso

(D) Racemic

Enantiotropic hydrogens are

(A) Two hydrogens attached to a chiral carbon

(B) Two hydrogens on same side of double bond

(B) Two hydrogens on same side of cycloalkane

(D) Two hydrogens attached to a carbon with two different groups

If a carbon is bonded to two hydrogens and to two different groups, the two hydrogens are called enantiotopic hydrogens