@ anita
equilibrium as a whole a imp topic , stil u need to focus more on ionic equilibrium , physical are easy and ionic needs more understanding .
the following topics from where jee ask ques .
1- CALCULATION OF PH OF A SOLUTION
2- lewis and arrheneius concept of acid and bases
3- calculating the equilibrium constant value (kb )
4- common ion effect and le chatilors principle
HOPE IT CLEARS