Hello,

You didn't Mentioned your Stream of Class 11th and 12th. But I'm assuming you are from science stream from maths.

For Physics - Class 11th

• Laws of Motion
• Rotational Motion
• Oscillation and Waves
• Gravitation
• Thermodynamics.

These chapters of physics are very important with school as well as competitive exam point of view.

For Chemistry - Class 11th

• Whole Organic Chemistry ( Very Very Important)
• Some basic concepts of chemistry
• Atomic Structure
• Chemical bonding.

For Mathematics - Class 11th

• Co-ordinate Geometry
• Permutation and Combination
• Calculus
• Binomial Theorem.

These chapters of physics, chemistry and maths are very important with school as well as competitive exam point of view.

Hope this wa helpful.