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Chemistry
Excess of isobutane on reaction with Br 2 in presence of light at 125° C gives which one of the following, as the major product?
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Q. Excess of isobutane on reaction with $Br _{2}$ in presence of light at $125^{\circ} C$ gives which one of the following, as the major product?
JEE Main
JEE Main 2021
Hydrocarbons
A
$CH_3 - \underset{\overset{|}{C}H_3}{\overset{\underset{|}{B}r}{C}} - CH_2 - Br$
33%
B
$CH_3 - \underset{\overset{|}{C}H_2Br}{CH} - CH_2Br$
17%
C
$CH_3 - \underset{\overset{|}{C}H_3}{CH} - CH_2Br$
6%
D
$CH_3 - \underset{\overset{|}{C}H_3}{\overset{\underset{|}{C}H_3}{C}} - Br$
44%
Solution:
$\underset{\text{(excess isobutane)}}{CH_3 - \overset{\underset{|}{C}H_3}{C}H - CH_3} \xrightarrow[h\nu/\Delta]{Br_2} CH_3- \underset{\overset{|}{B}r}{\overset{\underset{|}{C}H_3}{C} } - CH_3$