sir pls tell a book in chemistry class 10 for preparing of olympiads and which is rich in theory necessary for exams as well. would ak singh or pradeep do or any other book is required

For class X the main olympiads that normally come up at the national level are

1. NTSE exam

there are books available for studying for NTSE

2. CBSE Chemistry Olympiad

for this you need to thorough with the NCERT Text book

3. CBSE Maths Olympiad

You have to completely revise NCERT text book , and from my experience of writing this olympiad in 10th

i would suggest you to buy R.D.Sharma Mathematics for class X , they have lots of important and tricky questions that you can practice.

Best Of Luck !

Please approve !