Consider the reaction,

This reaction will be the fastest in:

1. Ethanol

2. Methanol

3. N, N'-dimethylformamide (DMF)

4. Water

Sandmeyer's reaction described by among the following is:

1.
2.
3.
4.

A major product is obtained by the dehydrohalogenation of 2-Chloro-2-methyl butane with sodium ethoxide in ethanol. The product's IUPAC name is:

1. 2-Methyl-2-butene

2. 2-Methyl-1-butene

3. 1-Methyl-2-butene

4. Methyl butene

Identify (Z) in the following reaction sequence:

C₂H₅I $\underset{\mathrm{KOH}}{\overset{\mathrm{Alcoholic}}{\to }}$(X) $\underset{}{\overset{{\mathrm{Br}}_2}{\to }}$(Y) $\stackrel{\mathrm{KCN}}{\to }$(Z):

1. CH₃-CH₂-CN     

2. $\underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}-\underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}$

3. $\underset{Br}{\underset{|}{{\mathrm{CH}}_2}}-\underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}$     

4. $\underset{\mathrm{CN}}{\underset{|}{\mathrm{CH}}}=\underset{\mathrm{CN}}{\underset{|}{\mathrm{CH}}}$

Which of the following compounds undergoes nucleophilic substitution reaction most easily?

1.		2.
3.		4.

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

The most reactive compound for S_N2 reaction among the following is: 

1.		2.
3.		4.