hiii
Since in ur previous question u had mentioned that u are lagging behind .. I am telling u the must do topics in this answer ...
Okay so here we go ...
1. Physical Chemistry
* Ionic Equilibrium
* ElectroChemistry
* Titrations etc. i.e. Concepts of Mole etc.
These chapters shud be done properly
2. Organic Chemistry
* Aldehydes and Ketones
* Aromatic compounds
* Basic Mechanisms .. which people refer as Intro to Organic ..i.e. I effect etc.etc.
3. Inorganic Chemistry
* Salt analysis is must
The above mentioned topics shud be done ..
Cheers