Dear Omveer, Chemistry questions in NEET are not the toughest in nature and neither are they designed to choose the one with the most IQ score. Generally questions come from NCERT. If you prepare well from NCERT then you will be able to attempt almost all the questions. There will be surely around 80% of the questions from NCERT. Practicing is the most important key whole preparing only reading the formulas in physical chemistry or the reaction mechanisms in organic chemistry will leave you stranded in a test, without actual practice of the questions. After learning a formula in physical or a mechanism in organic chemistry, try to practice a lot of problems on those concepts so that you get the application right. Talking about the Inorganic Chemistry. You might have heard that Inorganic Chemistry is an "exception". It's a misconception among students that Inorganic Chemistry is all about mugging up and it should be done at the last moment. You must try to learn it by heart.

Apart from NCERT, you should search for reference books for practicing more questions. This will surely boost up your confidence.

All the best

Hope this helps