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Among the following bromides given below, the order of their reactivity in the ${\mathrm{S}}_{\mathrm{N}}1$ reaction is

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

Arrange the following in the order of C-Br bond strength in a polar solvent

1. I < II < III < IV
2. III < IV < I < II
3. IV < III < II < I
4. II < I < III < IV

(A) and (B) are respectively :
1. 
2. 
3. 
4. 

Which is an example of ipso substitution?
1. Halogenation of Benzene
2. Formation of 2, 4, 6- tribromophenol from salicylic acid
3. Friedel craft alkylation
4. All of these

Which has the highest heat of combustion?
1. 
2. 
3. 
4. 

Which order for the basic character of amine is correct for the following compounds?
              
1. 3 > 1 > 2 > 5 > 4
2. 3 > 2 > 1 > 5 > 4
3. 3 > 1 > 2 > 4 > 5
4. 3 > 2 > 1 > 4 > 5

In the following compounds
        
The order of acidity is
1. III > IV > I > II
2. II > I > III > IV
3. I > IV > III > II
4. IV > III > I > II

Match the following reactions with the corresponding reaction intermediates
List - I
$$\begin{gathered} \left(\mathrm{I}\right) {\mathrm{CF}}_3 - {\mathrm{CHCl}}_2 \stackrel{\mathrm{alc}. \mathrm{KOH}/∆}{\to } {\mathrm{CF}}_2 = {\mathrm{CCl}}_2 \\ \left(\mathrm{II}\right) {\mathrm{CH}}_2 = \mathrm{CH}-{\mathrm{CH}}_3 \stackrel{{\mathrm{SO}}_2{\mathrm{Cl}}_2/\mathrm{hv}}{\to } {\mathrm{CH}}_2 = \mathrm{CH}-{\mathrm{CH}}_2\mathrm{Cl} \\ \left(\mathrm{III}\right) {\mathrm{CH}}_3-{\mathrm{CH}}_2\mathrm{Br} \stackrel{\mathrm{alc}.\hspace{0.17em}\mathrm{KOH}/∆}{\to } {\mathrm{CH}}_2 = {\mathrm{CH}}_2 \\ \left(\mathrm{IV}\right) {\left({\mathrm{CH}}_3\right)}_2\mathrm{C} - \mathrm{Br} \stackrel{\mathrm{alc}.\hspace{0.17em}\mathrm{KOH}/∆}{\to } {\left({\mathrm{CH}}_3\right)}_2\mathrm{C} = {\mathrm{CH}}_2 \end{gathered}$$
List - II
1. Transition state
2. Carbocation
3. Carbanion
4. Free radical
   (I) (II) (III) (IV)
1. 3   2     1     4
2. 3   4     1     1
3. 2   4     3     1
4, 3   4     1     2

In the above compound, arrange the nitrogen according to their decreasing basic strength
1. 1 > 2 > 3 > 4
2. 4 > 3 > 1 > 2
3. 2 > 4 > 1 > 3
4. 3 > 4 > 1 > 2
 

What is major product of following reaction?

(1)  
(2) 
(3)   
(4)  

1. 
2. 
3. 
4. 

Trans-2-butene on bromination using ${\mathrm{CS}}_2$ gives which dibromo derivative?
1. (R), (R)-2,3-dibromobutane
2. (S), (S)-2,2-dibromobutane
3. Racemic -2,3-dibromobutane
4. Meso-2,3-dibromobutane

Among the following, the most stable carbocation is-
1.
2. 
3. 
4. 

The correct order of basic nature of the following compounds is
            
1.  2 > 1 > 3 > 4
2.  1 > 3 > 2 > 4
3.  3 > 1 > 2 > 4
4.  1 > 2 > 3 > 4

The major product obtained when ${\mathrm{Br}}_2/\mathrm{Fe}$ is reacted with
                           
1. 
2. 
3. 
4.