General Mechanism of Electrophilic Aromatic Substitution

Q. The electrophilic aromatic substitution proceeds through :

Q. $\left(I\right)Chlorobenzene$ $\left(II\right)2,4-dinitrochlorobenzene$ $\left(III\right)p-nitrochlorobenzene$

The decreasing order of their reactivities towards electrophilic substitution reaction is:

1. $\left(I\right)>\left(II\right)>\left(III\right)$
2. $\left(I\right)>\left(III\right)>\left(II\right)$
3. $\left(II\right)>\left(I\right)>\left(III\right)$
4. $\left(III\right)>\left(I\right)>\left(II\right)$

Q. Identify the position where electrophilic aromatic substitution $\left(EAS\right)$ is most favourable.

1. $A$
2. $B$
3. $C$
4. $A\text{and}C$

Q. Statement-1: Benzene and ethene both react with electrophilic reagents.
Statements-2: Benzene and ethene both have loosely bound π-electrons, which can be donated to the vacant orbital of the electrophile

1. Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for statement-1
2. Statement-1 is true, Statement-2 is true; Statement-2 is NOT a correct explanation for statement-1
3. Statement-1 is true, Statement-2 is false
4. Statement-1 is false, Statement-2 is true

Q. Among the following compounds, the decreasing order of reactivity towards electrophilic substitution is:

1. $III>I>II>IV$
2. $IV>I>II>III$
3. $I>II>III>IV$
4. $II>I>III>IV$

Q. Which pair of products would result from the acid cleavage of phenyl propyl ether with HBr at an elevated temperature?

1. Phenol and 1-bromopropane
2. Phenol and 1-propanol
3. Bromobenzene and 1-propanol
4. Bromobenzene and 1-bromopropane
   

Q. $\text{Benzene}\underset{AlC{l}_3}{\overset{H_{3}C-\left(C{H}_3\right)CH-C{H}_2-Cl}{\to }}$

The product formed would be:

1. 
2. 
3. 
4. All of these

Q. Which of the following electrophilic substitution reactions represent(s) the correct product(s)?

1. 
2. 
3. 
4. 

Q. $\text{Benzene}\underset{AlC{l}_3}{\overset{H_{3}C-\left(C{H}_3\right)CH-C{H}_2-Cl}{\to }}$

The product formed would be:

1. 
2. 
3. 
4. All of these

Q. Which one of the following is a free-radical substitution reaction

1. a
2. b
3. c
4. d