This publication is a part of an extended series titled Creative Commons. This book is for students having affinity towards personal advancement through series of practices. It also enables a learner of the same faculty to ascertain one's progress in the field of Science and Technology. It also encompasses a learner for sorting out various problems related to their understanding of the subject matter.

Republishing any content of this book will be a subject matter of receiving prior concern of the author. Without taking such concern one should not go for reproducing any part of the content.

For any kinds of information regarding this publication one can contact:

Chandan Sengupta, Arabinda Nagar, Bankura - 722101 (WB) India

This activity book is developed to meet the ever growing demand of students of high schools duly prescribed by CBSE, ICSE and other boards of studies. It will equip the fellow student differently and help the fellow student to gain a pace of learning as per its own.

This book has been published with all reasonable efforts taken to make the material error-free after the consent of the author. No part of this book shall be used, reproduced in any manner whatsoever without written permission from the author, except in the case of brief quotations embodied in critical articles and reviews.