1.		2.
3.		4.

  

$\underset{\mathrm{EtOH},∆}{\overset{\mathrm{KOH}}{\to }}\underset{\left(major\right)}{\left(A\right)}$

Product (A) is:

1.

2.

3.

4.

Br                  Br
 l                    l   
CH2-CH=CH-CH2→(A)
                       Zn(dust)

Above reaction is an example of 1,4-elimination.Predict the product.
(1) CH₃-CH=C=CH₂
(2) CH₃-C$\equiv$C-CH₃
(3) CH₃-CH₂-C$\equiv$CH
(4) H₂C=CH-CH=CH₂

Which is the major product expected from the following S_N² reaction?

1.      

2.     

3.     

4.    

 $<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>C{H}_3$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>|$
$C{H}_3—C—C{H}_3$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>|$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>Br$
        (a)

CH₃-CH-CH₃
         l
        Br
        (b)   

CH₃-CH-Br     
       (c)

Compare rate of E₂ reaction:-
(1)c>b>a

(2)a>b>c

(3)b>a>c

(4)c>a>b
           

Which is the major product of the following reaction?

 $\underset{H_{2}O}{\overset{}{\to }}$
$heatNaOH<mspace\; width="1em"></mspace>Product$

1. 

2. 

3. 

4. 

1-2-dichloro ethane + NaSCH₂CH₂SNa $\to$ P (C₄H₈S₂) 

Unknown product (p) of the above reaction is:

1. 

2. 

3. $\mathrm{H}-\mathrm{S}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}-\mathrm{S}-\mathrm{H}$

4. $\mathrm{H}-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_2-\mathrm{S}-\mathrm{H}$

 $\stackrel{\mathrm{KCN}}{\to }$  Product of reaction is:

 (MOM chloride)

(Methoxy methyl chloride)

1. 

2. 

3.  $Me-O-C{H}_2-C{H}_2-CN<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

4. $CN<mspace\; width="1em"></mspace>-C{H}_2-CN<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

In order to prepare 1-chloropropane, which of the following reactants can be employed?
(1) Propane and HCl in the presence of peroxide

(2) Propene and Cl₂ followed by treatment with aq. KOH

(3) Propanol-1 and SOCl₂/pyridine

(4) Any of the above can be used

Which of the following molecules would have a carbon-halogen bond most susceptible to nucleophilic substitution ?

(1) 2-Fluorobutane

(2) 2-Chlorobutane

(3) 2-Bromobutane

(4) 2-Iodobutane