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

Identify the relationship between hydrogen cyanide and hydrogen isocyanide.

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

The IUPAC name of the compound

is....

1. 3-keto-2-methylhex-4-enal

2. 5-formylhex-2-en-3-one

3. 5-methyl-4-oxohex-2-en-5-al

4. 3-keto-2-methylhex-5-enal

The correct order of strengths of the three carboxylic acids given below is:

Given,

Which of the given compounds can exhibit tautomerism?

(1) I and II            

(2) I and III

(3) II and III           

(4) I, II and III