Nucleophilic Substitution in Aryl Halides

Q.

Chlorobenzene on heating with NH₃under pressure in the presence of cuprous oxide gives

1. Benzamide

2. Nitrobenzene

3. Aniline

4. o- and p-Chloroaminobenzene

Q. Which of the following will be the least reactive towards nucleophilic substitution

1. 
2. 
3. 
4. $C_2{H}_{5}Cl$

Q. Hyperconjugation is also known as no-bond resonance.

1. True
2. False

Q. Rank the following in the decreasing order of their rates with methoxide ion $\left(C{H}_3{O}^{-}\right)$ in a nucleophilic aromatic substitution.

1. $3>4>1>2$
2. $2>1>4>3$
3. $3>4>2>1$
4. $4>3>2>1$

Q.

Chlorobenzene on heating with NH₃under pressure in the presence of cuprous oxide gives

1. Benzamide

2. Nitrobenzene

3. Aniline

4. o- and p-Chloroaminobenzene

Q. Ortho chlorotoluene on oxidation with $KMn{O}_4$ gives

1. Benzoic acid
2. Toluene
3. o- Chlorobenzoic acid
4. o-Chlorobenzaldehyde

Q.

The Dow's process is used for the preparation of

1. Chlorobenzene

2. Fluorobenzene

3. Bromobenzene

4. Phenol

Q.

The structure of the major product formed in the following reaction is

1. 

2. 

3. 

4. 

Q. Which of the following compounds undergoes replacement of $-Cl$ by $-OH$ by merely warming the compound with aqueous NaOH

1. 
2. 
3. 
4.