An optically active compound is

1. 1-bromobutane

2. $\mathrm{\beta }$-bromobutyric acid

3. 2-Bromo-2-methyl propane

4. 1-Bromo-2-methyl propane

Which of the following compounds exhibit stereoisomerism?

1. 2-methylbut-1-ene

2. 3-methylbut-1-ene

3. 3-methylbutanoic acid

4. 2-methylbutanoic acid

The molecule, among the following, that has the smallest heat of hydrogenation per mole is:

1. Cis-2-Butene

2. Trans-2-Butene

3. Propene

4. 1-Butene

Which of the following compounds will exhibit geometrical isomerism?

1. 1-Phenyl-2-butene

2. 3-Phenyl-1-butene

3. 2-Phenyl-1-butene

4. 1, 1-Dipheny]-1 -propene

The compounds that show geometrical isomerism among the following are:

a. 2-Butene

b. Propene

c. 1-Phenylpropene

d. 2-Methylbut-2-ene

1. a, b

2. c, d

3. a, b, c

4. a, c

How many optically active stereoisomers are possible for butane-2,3-diol?

1. 1

2. 2

3. 3

4. 4

Arrange the following groups in order of decreasing - I (inductive) effect :

${\mathrm{NO}}_2,$ $\mathrm{C}{\left({\mathrm{CH}}_3\right)}_3,$ ${\mathrm{CH}}_3,$ ${\mathrm{OCH}}_3,$ $\mathrm{Br}$

1.  ${\mathrm{NO}}_2>\mathrm{Br}>{\mathrm{OCH}}_3>\mathrm{C}{\left({\mathrm{CH}}_3\right)}_3>{\mathrm{CH}}_3$

2.  ${\mathrm{NO}}_2>\mathrm{Br}>{\mathrm{OCH}}_3>{\mathrm{CH}}_3>\mathrm{C}{\left({\mathrm{CH}}_3\right)}_3$

3.  ${\mathrm{NO}}_2>{\mathrm{OCH}}_3>\mathrm{Br}>\mathrm{C}{\left({\mathrm{CH}}_3\right)}_3>{\mathrm{CH}}_3$

4.  ${\mathrm{NO}}_2>{\mathrm{OCH}}_3>\mathrm{C}{\left({\mathrm{CH}}_3\right)}_3>\mathrm{Br}>{\mathrm{CH}}_3$

Choose the correct statement about the compounds A, B and C

A.  

B. 

C.

1.  A and B are identical

2.  A and B are diastereomers

3.  A and C are enantiomers

4.  A and B enantiomers  

The number of possible enantiomeric pairs than can be produced during monochlorination of 2-methylbutane is 

1.  2

2.  3

3.  4

4.  1

Incorrectly matched common name with IUPAC name is-