A unique collection of High Order Thinking Skills Questions for Class XI - Physics/ Chemistry/ Maths. A first of its kind, the book has been designed in the form of a WORKBOOK with blank space provided after every question. The student can prepare a chapter and attempt the questions in the provided space. The detailed solutions to all the problems have been provided at the end of the book. These questions will help you in scoring 95+ in CBSE and bridging the gap between Boards & Competitions.