Select the most correct statement among the following:

1.	SN1  mechanism takes place in non-polar solvents.
2.	SN2 mechanism in chiral substrates gives racemic mixture as products.
3.	SN1 mechanism is encouraged by polar solvents.
4.	The solvent never influences the mechanism.

The compound which undergoes hydrolysis on just warming with water and forms the corresponding hydroxyl derivative is:

1.  2, 4, 6-Trinitrochlorobenzene

2.  2-Chloro-1-butene

3.  2-Chloro-2-methyl butane

4.  2, 4-Dimethoxychlorobenzene

The compound that is most reactive with alcoholic KOH is

1.  ${\mathrm{CH}}_2 = \mathrm{CH} - \mathrm{Br}$

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

3.  ${\left({\mathrm{CH}}_3\right)}_2\mathrm{CH} - \mathrm{Br}$

4.  ${\mathrm{CH}}_3{\mathrm{COCH}}_2{\mathrm{CH}}_2\mathrm{Br}$

(i) Chloro benzene is mono-nitrated to M

(ii) Nitrobenzene is mono-chlorinated to N

(iii) Anisole is mono-nitrated to P

(iv) 2-nitro chlorobenzene is mono-nitrated to Q

Out of M, N, P, and Q, the compound that undergoes reaction with aqueous NaOH fastest is:

1.  M

2.  N

3.  P

4.  Q

If there is no rotation of plane-polarized light by a compound in a specific solvent, thought to be chiral, it may mean that :

1. The compound is certainly a chiral

2. The compound is certainly meso

3. There is no compound in the solvent

4. The compound may be a racemic mixture

In which of the following compounds, the C—Cl bond ionization shall give the most stable carbonium ion?

1. 

2. 

3. 

4. 

Chlorobenzene is prepared commercially by:

1. Grignard reaction

2. Raschig process

3. Wurtz-Fittig reaction

4. Friedel-Crafts reaction

A compound A of formula C₃H₆Cl₂ on reaction with alkali can give B of formula C₃H₆O or C of formula C₃H₄. B on oxidation gave a compound of the formula C₃H₆O₂. C with dilute H₂SO₄ containing Hg²⁺ ion gave D of formula C₃H₆O, which with bromine and NaOH gave the sodium salt of C₂H₄O₂. Then A is:

1. CH₃CH₂CHCl₂
2. CH₃CCl₂CH₃
3. CH₃CHClCH₂Cl
4. CH₂ClCH₂CH₂Cl

Which process does not occur during formation of CHCl₃ from C₂H₅OH and bleaching powder?

1. Hydrolysis                      2. Oxidation

3. Elimination                     4. Chlorination

Chloroform on reduction with Zn and HCl (alc.) gives:-

1. Formic acid

2. Chloretone

3. Chloropicrin

4. Methylene dichloride