S_N1 and S_N2 products are the same with (excluding stereoisomer):-

1.  
 2.  
3.  

4. 

Consider the nucleophilic attacks given below. Select in each pair that shows the greater S_N2 reaction rate.

(A)  

(B) $H_{3}C-Br+{}_{-}SH or H_{3}C-Br+C{H}_{3}SH$
$\left(iii\right) \left(iv\right)$

(C)  

(D)  


     A   B    C     D
1.  II   IV   VI   VIII
2.  II   III   V    VIII
3.  I    III   V    VIII
4.  I    III   V    VII 

Addition of KI accelerates the hydrolysis of primary alkyl halides because:

1. KI is soluble in organic solvents

2. the iodide ion is a weak base and a poor leaving group

3. the iodide ion is a strong base

4. the iodide ion is a powerful nucleophile as well as a good leaving group

The product X in the below mentioned reaction is:

1.		2.
3.		4.

Anisole$\underset{\mathrm{reflux}}{\overset{\mathrm{excess} \mathrm{HI} (\mathrm{conc}.)}{\to }}$Product

1. 

2. 

3. 

4. 

Which of the following compounds would react faster with NaCN in an S_N² reaction?

1. 

2. 

3. 

4. 

Product (A) and (B) respectively are:-
(a) 

(b)

(c)

(d)

$\underset{{\mathrm{NH}}_{3\left(\mathrm{l}\right)}}{\overset{2 \mathrm{eq}. {\mathrm{KNH}}_2}{\to }}$$\underset{\mathrm{then} {\mathrm{H}}_3\mathrm{O}}{\overset{\mathrm{n}-\mathrm{C}{\hspace{0.17em}}_4{\mathrm{H}}_9-\mathrm{Br}}{\to }}$(P);End product (P) of the above reaction is:

1.

2. 

3. 

4. 

(A)In the above reaction, maximum Saytzeff product will obtained when
     (a) X = I    (b) X = -Cl      (c) X = -Br       (d) X = -F

(B) In the above reaction Hofmann product is major when X is:
      (a) -I          (b) -Cl            (c) -Br             (d) -F

1. A- a , B - d

2. A- b, B - c

3. A -c , B - a 

4. A - d, B -d

   Product:
The product of the above mentioned reaction is:

1. 

2. 

3. 

4. None of the above