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Each chapter begins with basic concepts in the form of a flow chart. Important NCERT and NCERT EXEMPLAR Questions have also been included. Objective type questions Multiple Choice Questions Fill in the blanks Very Short Answer Questions based on latest CBSE Guidelines. HOTS (Higher Order Thinking Skills) based questions are given to think beyond rote learning. Proficiency Exercise is given at the end of each chapter for ample practice of the student. Self-assessment test is given chapterwise to check the knowledge grasped by the student. Three Periodic Tests which include Pen Paper Test and Multiple Assessment is given as a part of internal assessment. Five Model Papers are also provided to prepare the student for the examination. Solved CBSE 2020 Examination Paper.