Taking into account the stability of various carbocations and, as well as the rules governing mechanisms of carbocation rearrangements, which reaction is most likely to occur during the given reaction ?

Which of the following is the best stereochemical representation when reaction between 1 -methylcyclohexene and NBS react in aqueous dimethyl sulfoxide?

1.		2.
3.		4.	None of these

$\begin{array}{ccccc}{\mathrm{CH}}_3& -& \stackrel{{\mathrm{CH}}_3}{\underset{{\mathrm{CH}}_3}{\stackrel{|}{\underset{|}{\mathrm{CH}}}}}& +& {\mathrm{H}}_2\mathrm{C}\end{array}$ = CH₂$\underset{2.5^0\mathrm{C}}{\overset{\mathrm{HF}}{\to }}$(A);    (A) is:

(a) 

(b) 

(c) 

(d) CH₃-$\begin{array}{c}\underset{|}{\mathrm{CH}}\\ {\mathrm{CH}}_3\end{array}$-CH₂-CH=CH₂

Di-imide (N₂H₂) is used to reduce double bond of:

(1)  $-\underset{|}{\mathrm{C}}=\mathrm{O}$               

(2) $-\mathrm{C}\equiv \mathrm{N}$             

(3) -NO₂           

(4) -CH=CH-

End product of the reaction is:-
(a)(b)

(c)      (d)

Product (A) is:-

1.  

2. 

3.  

4. 

Compound (A) is :$$
$$

1.  

2. 

3.  

4. 

MMPP $\to$ Magnesium mono peroxy phthalate. Product (X) is:

1.   

2. 

3.  

4. 

Product (A) is:

(1) Ph-CH₂-Cl                     

(2) Ph-CH₂-Br

(3) Ph-CH₂-CCl₃                 

(4) Ph-CH₂-CBrCl₂

Which one of the following compounds gives acetone (CH₃)₂C=O as one of the products of

1.  

2.  

3. 

4.