Nitroethane can exhibit one of the following kind of isomerism:

1. metamerism              2. optical activity

3. tautomerism              4. position isomerism

Which type of strain is present in fully eclipsed conformation of butane?

(1) Angle strain            

(2) Steric strain

(3) Both (a) and (b)         

(4) Neither (a) and (b)

Number of possible isomers of glucose are:

1. 10

2. 14

3. 16

4. 20

Only two isomeric monochloro derivatives are possible for:

(1) n-butane

(2) 2,4-dimethylpentane

(3) benzene

(4) 2-methylbutane

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

1. geometrical        2. optical

3. tautomerism       4. position

Hydrogen cyanide and hydrogen isocyanide are:

1. tautomers

2. positional isomers

3. metamers

4. chain isomers

The maximum number of stereoisomers possible for 3-hydroxy-2-methyl butanoic acid is/are :

1. 1               

2. 2

3. 3               

4. 4

Maleic and fumaric acids are:

1. tautomers                  2. geometrical isomers

3. chain isomers              4. functional isomers

The optically active alkane with lowest molar mass is:

1. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{C}\equiv \mathrm{CH}$

2. ${\mathrm{CH}}_3{\mathrm{CH}}_2-\stackrel{{\mathrm{CH}}_3}{\stackrel{|}{\mathrm{CH}}}-{\mathrm{CH}}_3$

3. 

4. ${\mathrm{CH}}_3{\mathrm{CH}}_2.{\mathrm{CH}}_2{\mathrm{CH}}_3$

a-D-(+)-glucose and β-D-(+)-glucose are :

(a) enantiomers

(b) conformers

(c) epimers

(d) anomers