This book very much conceptual book and it’s question is very conceptual and tough this book was very good book and it’s writer hc verma what a writer I like him and in this books exercise question is short, objective1, and objective 2 and exercise is very good combination it’s book very good for jeemain Pepretion and in this book question level is very high and jee advanced and welfare jeemain so all of you guys you can buy this book without any thinking I am sure you are enjoying for this book