it is good book where u can understand the concept very easily
i am very happy that i have bought this book and this is why i got good marks

Thank you so much best book ever

Has all the things necessary for OTBA.
Has different questions too.

Must for all students to prepare well for Open Text Book Assessment.

This book is a must buy for students of class IX who are having difficulties in OTBA and need sample questions etc. for practice. I strongly recommend this book.
Book includes all the text including the CBSE questions with answers and other questions framed by the OSWAAL team. Perfect book.

I strongly recommend this book for 9th class students for OTBA. Oswaal is a very good publisher for educational purposes. OTBA is new for us and this book guides us very perfectly. As a student I am again recommending you to place order for this book.

This is a good book for revision for OTBA for CBSE class IX. I highly recommend this book for those students who want to score high in SA 2 .