Hi Bharath

If you are facing problem finding answers to questions like these, I will suggest you to refer to some of the best books for JEE Main 2019 preparation.

Some of the links are here:

https://engineering.careers360.com/articles/best-books-for-jee-main-2019

https://engineering.careers360.com/articles/best-books-recommended-jee-main-toppers

All the best!