How mg treated with thf.............................................. And B reaction Is how i prepare for jee mains and advance now i am in 12 .

@ kartik 
if u are now in class 12^th , then u dnt have enough time now , as the jee exam heading closer , currently what u can do is that – just cover the 12^th portion conceptwise , and if possible give the sunday only for the revision of the 11^th concept ,revision means just formula , concept , cheat sheet , short notes etc . 
and after your board exam , u have 1 week if u are opting for offline exam , and if online , then 2 weeks , 
in that time period , do the 11^th portion and previous year paper of last 3 years . 

ALL THE BEST ..