Which of the following is optically active?

1. Alanine

2. 2-butanol

3. Lactic acid

4. All of these

Lactic acid is:

1. propionic acid

2. β-hydroxypropanoic acid

3. α-hydroxypropanoic acid

4. none of the above

Benzaldoxime exists in how many forms?

1. 1

2. 2

3. 3

4. 4

Nitroethane can exhibit one of the following kind of isomerism:

1. metamerism             

2. optical activity

3. tautomerism             

4. position isomerism

Number of possible isomers of glucose are:

1. 10

2. 14

3. 16

4. 20

Isomerism among compounds due to migration of a proton is known as:

1. Geometrical       

2. Optical

3. Tautomerism       

4. Position

The number of different amines corresponding to the formula C₃H₉N is:

1. 2

2. 3

3. 4

4. 5

Hydrogen cyanide and hydrogen isocyanide are:

1. tautomers

2. positional isomers

3. metamers

4. chain isomers

The optically active compound among the following is-

1. Isobutyric acid

2. beta-Chloropropionic acid

3. Propionic acid

4. alpha-Chloropropionic acid

The isomeric cis-2-Butene and trans-2-Butene can be distinguished on the basis of:

1. Their colour.

2. Their reduction products.

3. The products they give on ozonolysis..

4. The products they give on addition to bromine.