which chapter is very important for class 12CBSE board physics, chemistry and biology plese tell sir .

Hello aspirant,

Some of the important topics/chapter in Physics(As per weightage):

• Optics (Both Wave and Ray optics) – 14 marks
• Electrostatics – 08 marks
• Magnetic effect of current and magnetism – 08 marks
• EMI and AC – 08 marks
• Current electricity – 07 marks
• Electronic Devices – 07 marks
• Atoms and Nuclei – 06 marks
• Communication systems – 05 marks
• Dual nature of radiation and matter – 04 marks
• EM Waves – 03 marks

Important chapter and topic of chemistry to score good marks in less effort:-

• The chapters like Biomolecules, Polymers, and Chemistry in everyday life are considered as easy for even below average studentsa. Moreover, it carries a weightage of 10 marks therefore it must not be missed.
• In physical chemistry, you must not miss the solution and Chemical Kinetics as its important and carries 5 marks.
• In inorganic chemistry, Coordination Chemistry (Naming) and Surface Chemistry (D/B) are important chapters and caries 10 marks each. P-block (Structure, Hybridization) and D-block (KMnO4, K2Cr2o7) are also important Chapters for CBSE Class 12th Board Exam as these two chapters carry 13 marks each.
• In Organic chemistry, Haloalkenes & Haloarenes are important chapter. Additionally, important topics are Name reactions are from:-
• Haloalkenes & Haloarenes
• Alcohol, Phenols & Ether
• Aldehyde, Ketones & Carbonylic
• Amines

Important chapter for biology:-

• 1.REPRODUCTION IN ORGANISMS.
• 2.SEXUAL REPRODUCTION IN FLOWERING PLANT 3: HUMAN REPRODUCTION.
• 4: REPRODUCTIVE HEALTH 5.PRINCIPLES OF INHERITANCE AND VARIATION.
• 6. MOLECULAR BASIS OF INHERITANCE.
• 7: EVOLUTION are the most important chapter in biology ,

if a student cover all these would be able to score well.

Hope this helps you

Feel free to ask any questions

All the best for your future plans