Alkyl cyanide \(R-C \equiv N\) and alkyl isocyanides \(R- \overset{+}{N} \equiv C^-\) are: 

1.	Tautomers	2.	Metamers
3.	Functional isomers	4.	Geometrical isomers

Hydrogen cyanide and hydrogen isocyanide are:

1. tautomers

2. positional isomers

3. metamers

4. chain isomers

The non-staggered form(s) of ethane among the following is-

1.		2.
3.		4.	None of these

The optically active compound among the following is-

Which of the following acids shows stereoisomerism?

1. Oxalic acid            

2. Tartaric acid

3. Acetic acid            

4. Formic acid

A racemic mixture is a mixture of:

1. meso and its isomers

2. d- and its l-isomers in equal proportions

3. d- and l-isomers in different proportions

4. meso and d-isomers

Compounds which rotate plane polarised light clockwise direction are known as:

1. Dextrorotatory

2. Laevorotatory

3. Optically inactive compounds

4. Racemic mixture

Glucose and fructose are-

The optically active compound among the following is-

1. Isobutyric acid

2. beta-Chloropropionic acid

3. Propionic acid

4. alpha-Chloropropionic acid

Which is incorrect about enantiomorphs?

(1) They rotate the plane of polarized light in different directions

(2) They have mostly identical physical properties

(3) They have same configuration

(4) They have different biological properties