Enantiomers

Q.

Enantiomers can be separated by:

1. Salt formation method

2. Mechanical separation

3. Fractional crystallisation

4. Fractional distillation

Q. Compounds which are not enantiomers are diastereomers

1. False
2. True

Q.

Which of the following is not applicable to enantiomers?

1. They have identical melting and boiling points

2. They have identical chemical properties except towards optically active reagents

3. They can be separated by fractional crystallization

4. They rotate the plane polarized light in opposite directions but to the same extent.

Q. find out total stereoisomers offollowing compound: 4-methyl-2, 5 oxa-diene (1)8 (2)4 (3)6 (4)

Q.

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

1. a, b, c, d

2. b, d, e, f, g

3. a, b, f

4. a, b, c, f

Q. Compounds which are not enantiomers are diastereomers

1. False
2. True

Q.

1. Bicyclo [2.4.0] octan - 3 - ol

2. Bicyclo [4.2.0] octan - 3 - ol

3. Bicyclo [2.2.2] octan - 3 - ol

4. Bicyclo [4.2.0] octan - 6 - ol