Addition of bromine to cis-3-hexene gives

1.  Racemic dibromide

2.  A mixture of diastereomeric dibromides

3.  Optically active dibromide

4.  Meso dibromide

Among the following compounds the one that is most reactive towards electrophilic nitration is

1. Benzoic acid

2. Nitrobenzene

3. Toluene

4. Benzene

Some meta-directing substituents in aromatic substitution are given. Which one is the most deactivating?

Consider the following reaction:
  
What is the major product A?

1.		2.
3.		4.

1. Phenol

2. Aniline

3. Methoxy benzene

4. Toluene

Which of the following would exhibit cis-trans isomerism?

1. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}={\mathrm{CH}}_2$

2. $\mathrm{ClCH}=\mathrm{CHCl}$

3. $\mathrm{ClCH}={\mathrm{CCl}}_2$

4. ${\mathrm{CH}}_2=\mathrm{CH}-\mathrm{COOH}$

The non-aromatic compound among the following is-

1.            

2.

3.         

 4.  

Which of the following compounds is the most reactive towards sulphonation?

1. Toluene               

2. Chlorobenzene

3. Nitrobenzene       

4. m-Xylene

The monochlorinated products (excluding stereo-isomers) obtained from the reaction:

1.  4                           

2.  5                     

3.  6                               

4.  7                                         

But-2-ene exhibits cis-trans-isomerism due to

1. Rotation around C₂-C₃ double bond

2. Rotation around C₃-C₄ sigma bond

3. Rotation around C₁-C₂ bond

4. Restricted rotation around C=C bond