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

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 carboxylic acids :-


(a) I>II>III
(b) II>III>I
(c) III>II>I
(d) lI>I>IlI

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