Embibe Experts Solutions for Chapter: Hydrocarbons, Exercise 3: EXERCISE-3

How many $1,2$-shifts of carbocation intermediate are involved during the course of following reaction:

Number of possible mono chloro derivative products of $2$-methyl butane is?

Number of compound which can show faster rate of ${\mathrm{S}}_{\mathrm{NAR}}$ than 

(1) 

(2) 

(3) 

(4) 

(5) 

(6) 

(7)

Number of compound which cannot involve in Fridal craft reaction.

(1) 

(2) 

(3) 

(4) 

(5) 

(6) 

Among the following, the number of ortho para directing with activating group.

(1) $-{\mathrm{NH}}_2$

(2) $-\mathrm{OH}$

(3) $-\mathrm{OMe}$

(4) $-\mathrm{Cl}$

(5) $-\mathrm{O}-\stackrel{\underset{\parallel }{\mathrm{O}}}{\mathrm{C}}-{\mathrm{CH}}_3$

(6) $-\mathrm{NH}-\stackrel{\underset{\parallel }{\mathrm{O}}}{\mathrm{C}}-{\mathrm{CH}}_3$

(7) $-{\mathrm{CCl}}_3$

(8) $-{\mathrm{CF}}_3$

(9) $-\mathrm{CH}=\mathrm{CH}-\mathrm{COOH}$

(10) $-{\mathrm{NO}}_2$

(11) $-\mathrm{COOH}$

Among the following the number of reagents can be used to generate $\stackrel{\oplus }{\mathrm{N}}{\mathrm{O}}_2$ in nitration of benzene rings..

(1) conc. ${\mathrm{HNO}}_3+$conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$

(2) ${\mathrm{HNO}}_3+{\mathrm{HClO}}_4$

(3) Solid ${\mathrm{N}}_2{\mathrm{O}}_5$

(4) conc. ${\mathrm{HNO}}_3+$conc.${\mathrm{HNO}}_2$

(5) conc.${\mathrm{H}}_2{\mathrm{SO}}_4$

(6) ${\mathrm{NaNO}}_2+\mathrm{HCl}$

Number of compounds that gives a tribromo derivative on treatment with bromine water.

Electrophilic attack of $\stackrel{\oplus }{\mathrm{N}}{\mathrm{O}}_2$ at meta position is observed in