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

 The compound is an example:

1. Aromatic compound                 

2. Heterocyclic compound

3. Annulene                               

4. Xanthates