2-Methylpent-3-enoic acid shows:

1. Optical isomerism       

2. Geometrical isomerism

3. Both (1) and (2)        

4. None of these

Number of possible isomers of glucose are:

1. 10

2. 14

3. 16

4. 20

The total number of isomeric carbocations possible for the formula C₄H₉⁺ is:

(1) 3

(2) 4

(3) 2

(4) 5

Which class of compounds can exhibit geometrical isomerism?

(1) C₆H₅CH=NOH

(2) CH₃CH =CHCH₃

(3) 

(4) All of the above

Ethyl acetoacetate exhibits:

(1) optical isomerism                

(2) geometrical isomerism

(3) tautomerism                   

(4) enantiomerism

Which of the following does not show stereo isomerism?

1. 

2. 

3. $\mathrm{H}$
$|$
${\mathrm{CH}}_3—\mathrm{C}—\mathrm{COOH}$
$|$
$\mathrm{H}$       

(4) $COOH$
$|$
$H—C—OH$
$H—C—OH$
$|$
$COOH$

Only two isomeric monochloro derivatives are possible for:

(1) n-butane

(2) 2,4-dimethylpentane

(3) benzene

(4) 2-methylbutane

Keto-enol tautomerism is observed in :

1. 

2. 

3. 

4. None of the above

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