Hello Chitra Shailesh ,I think you should study AAKASH module for chemistry because It carry all important concept in very manner.Also it carries almost all questions and concept related to JEE preparation.

To read more about chemistry subject you can refer this book also:

1.Organic Chemistry by O.P Tandon

2.Inorganic Chemistry by O.P Tandon

3.Numerical Chemistry by P.Bahadur

For more information comment below.

BEST OF LUCK