is op tandon good for physical chemistry plzz tell fast if I want to get full marks in itand plzz tell out of 100 marks how many marks is of physical chemistry in jee mains now out of 100

Uzma, OP Tandon is extremely a good book for preparing for Chemistry. But first, you must complete NCERT textbooks of Class 11 and 12. NCERT is helpful for having basic preparation and clear concept. Then you can move on to OP Tandon. OP Tandon is basically recommended for Organic Chemistry. Approx 10 to 12 questions are asked from Physical Chemistry in Jee Main. Concept of Physical Chemistry by P Bahadur is another book to help you with your preparation in physical chemistry. This book contains set of quality problems.

I will suggest you to first complete your NCERT and then switch to OP Tondon. I am not saying that OP Tondon is bad but if you have skipped NCERT then it is of no use. OP Tondon is best but after finishing NCERT.

Physical Chemistry comprises of 35% of whole Chemistry syllabus, but these are just the patterns.

All the best!!