Gamma Elimination

Q.

Which of the following is $\gamma$- elimination?

1. $C{H}_3-C{H}_2-\stackrel{H}{\stackrel{|}{CH}}-\stackrel{Br}{\stackrel{|}{C{H}_2}}\underset{}{\overset{KOH\left(alc\right)}{\to }}C{H}_{3}C{H}_{2}CH=C{H}_2+HBr$

2. $R_2-\stackrel{H}{\stackrel{|}{C}}-Cl\to R_{2}C:$

3. $\underset{Br}{\underset{|}{C{H}_2}}-C{H}_2-\underset{Br}{\underset{|}{C{H}_2}}\underset{}{\overset{Zndust}{\to }}△+B{r}_2+Zn$

4. None of these

Q.

Which of the following is $\gamma$ position in
$\underset{IV}{C{H}_3}-\underset{III}{C}{H}_2-\underset{II}{C}{H}_2-\underset{I}{\stackrel{Br}{\stackrel{|}{C{H}_2}}}$

1. i

2. ii

3. iii

4. iv

Q.

Which of the following is $\gamma$- elimination?

1. $C{H}_3-C{H}_2-\stackrel{H}{\stackrel{|}{CH}}-\stackrel{Br}{\stackrel{|}{C{H}_2}}\underset{}{\overset{KOH\left(alc\right)}{\to }}C{H}_{3}C{H}_{2}CH=C{H}_2+HBr$

2. $R_2-\stackrel{H}{\stackrel{|}{C}}-Cl\to R_{2}C:$

3. $\underset{Br}{\underset{|}{C{H}_2}}-C{H}_2-\underset{Br}{\underset{|}{C{H}_2}}\underset{}{\overset{Zndust}{\to }}△+B{r}_2+Zn$

4. None of these