Thank you for reporting, we will resolve it shortly
Q.
When isobutane is treated with $Br_{2}$ in sunlight, then major product is :-
NTA AbhyasNTA Abhyas 2022
Solution:
Bromine is highly regio selective in where it attacks. The relative rates of attack at the different types of H atom are $3^\circ :2^\circ :1^\circ =1640:82:1$