${\mathrm{Cl}}_2$ reacts with ${\mathrm{CS}}_2$ in presence of ${\mathrm{I}}_2$ to form

1. ${\mathrm{CCl}}_4$

2. ${\mathrm{Cl}}_3\mathrm{C}-{\mathrm{NO}}_2$

3. ${\mathrm{CHCl}}_3$

4. ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cl}$

An alkyl halide that can be used as a methylating agent is

Which of the following compounds has the lowest boiling point?

1. Pentyl chloride

2. tertiary-Butyl chloride

3. Isobutyl chloride

4. n-Butyl chloride

The molecule among the following with the maximum reactivity towards ${\mathrm{S}}_{\mathrm{N}}2$ reaction is:

1. ${\mathrm{R}}_3\mathrm{CX}$

2. ${\mathrm{RCH}}_2\mathrm{X}$

3. ${\mathrm{R}}_2\mathrm{CHX}$

4. ${\mathrm{CH}}_3\mathrm{X}$

What is the correct order of boiling points for alkyl halides?

1. C₂H₅Cl > C₂H₅Br > C₂H₅I

2. C₂H₅I > C₂H₅Br > C₂H₅Cl  

3. C₂H₅I > C₂H₅Cl > C₂H₅Br

4. C₂H₅Br > C₂H₅I > C₂H₅Cl

Substitution of chloride takes place at higher temperatures in 

1. ${\mathrm{CH}}_2={\mathrm{CH}}_2$

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

3. $\mathrm{CH}\equiv \mathrm{CH}$

4. None of the above

Chlorobenzene on heating with ${\mathrm{NH}}_3$ under pressure is the presence of cuprous chloride gives

1. nitrobenzene

2. aniline

3. benzamide

4. o- and p-chloroaminobenzene

Which halide among the following exhibits the highest reactivity in an S_N1 reaction?

1. sec-Butyl chloride

2. tert-Butyl chloride

3. n-Butyl chloride

4. Allyl chloride

The number of dibromo derivatives of propane are

1. 5

2. 4

3. 3

4. 2