The correct statement among the following regarding ${\mathrm{S}}_{\mathrm{N}}1$ is  -

1. Inversion of configuration

2. Retention of configuration

3. Conversion of configuration

4. Both (1) and (2) 

Para-substituted benzyl bromide undergoes SN¹ reaction with nucleophiles:

Arrange given four compounds in their decreasing order of reactivity for the above reaction:

1. II>I>III>IV

2. I>IV>III>II

3. I>IV>II>III

4. II>III>IV>I

Acidity of Fluoroform (I), bromoform (II), Iodoform (III) and chloroform (IV) in decreasing order is as follows:

1. I>II>III>IV

2. IV>III>II>I

3. IV>I>II>III

4. IV>I>III>I

The X and Y in the below mentioned reaction are

Which of the following chloro derivatives of benzene would undergo hydrolysis most readily with aqueous KOH to give the corresponding hydroxy derivative 

Which of the following will have the maximum dipole moment?

1. ${\mathrm{CH}}_3\mathrm{F}$

2. ${\mathrm{CH}}_3\mathrm{Cl}$

3. ${\mathrm{CH}}_3\mathrm{Br}$

4. ${\mathrm{CH}}_3\mathrm{I}$

What is the total number of chiral products produced by monochlorination of 2-methylbutane ?

1. 2

2. 4

3. 6

4. 8

The correct order of solvolyis in the following alkyl halide is 

Arrange the following halides in the decreasing order of S_N1 reactivity:

(I) ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Cl}$

(II) ${\mathrm{CH}}_2=\mathrm{CHCH}\left(\mathrm{Cl}\right){\mathrm{CH}}_3$

(III) ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}\left(\mathrm{Cl}\right){\mathrm{CH}}_3$

1. I > II > III

2. II > I > III

3. II > III > I

4. III > II > I

Replacement of 'Cl' of  chlorobenzene to give phenol requires drastic conditions but chlorine of 2,4- dinitrochloro benzene is readily replaced because

1. ${\mathrm{NO}}_2$ makes the ring electrons rich at ortho and para position

2. ${\mathrm{NO}}_2$ withdraws electrons from meta position

3. ${\mathrm{NO}}_2$ donates electrons at m-position

4. ${\mathrm{NO}}_2$ withdraws electrons from ortho and para positions