Question

How to study 9th science

Answer 1

I am not really sure but I think, you can study if you want to ace your finals.

Apart from jokes, NCERTs are very important do all examples in maths and study chapters in theory and languages subjects.

Next is for maths exemplar is a good reference book. For social science, I don't think any is required.

For science, if you feel the need Lakhmir Singh is the best. In languages, practice grammar and comprehension, if you are studying in CBSE for writing skills consider Main Course Book, and literature, full marks is a good choice.

Last year question papers and sample papers will help you during exam times. Doing three or four will be enough. 

Answer 2

Read all the chapters thoroughly. Do all the examples of physics from ncert.