Comprehensive Practical Science Class-IX

Comprehensive Practical Science Class-IX
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Comprehensive Practical Science Class-IX

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Publisher: Laxmi Publications
ISBN: 9788131806432
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PREFACE The present syllabus in Science has been designed under six major themes, namely, Food, Materials, The World of the Living, How Things Work, Moving Things, People and Ideas, Natural Phenomenon and Natural Resources. Our educational philosophers and scientists have designed a separate course on practical exercises so as to inculcate laboratory skills amongst students. The secondary science curriculum has been made to include practical exercises from each theme to the maximum extent possible. It is envisaged that every student will carry out at least 20 exercises 10 experiments in each term in one academic session. Present book, Comprehensive Practical Science for class IX is strictly based on the new termwise CBSE curriculum. An honest effort has been made in this book to attain underlying objectives of syllabus, such as developing problem solving and decision making skills understanding and appreciating the joint enterprise of science, technology and society acquiring process skills which form part of the attitude for developing a scientific temper developing certain manipulative skills which are required in day to day life situations, etc. This practical book covers required practicals 20 prescribed in the new syllabus in all the science disciplines i.e., Physics, Chemistry and Biology. Multiple Choice Questions are also added with each practical to attempt well in Multiple Choice Written Test for testing practical skills. Thus, this book completely covers the Scheme of Evaluation. CBSE has recommended examinations for Science Practicals for Class IX and X as given below 1. Termwise examination First term from 1st April to 30th September, Second term from 1st October to 31st March . 2. Hands on practical examination will be conducted through formative assessment once in every term. This includes i Experiment set up ii Observation iii Record of observation data iv Analysis of observation v Conclusion Inference drawn by the student vi Practical Record File vii Viva. 3. Assessment of Practical Skills through MCQs will be in every term end summative assessment. Some of the salient features of the Comprehensive Practical Science are Practical exercises are strictly according to the New Termwise CBSE Curriculum. Practical Exercises Experiments are dealt very methodically i.e., according to scientific method process or and pattern approved by the eminent experts. Stress on use of SI unit is given, wherever necessary. Use of locally available required materials have been suggested, as far as possible, for conduction of experiments in the local laboratories. Multiple choice questions related to experiment theory of the practical principles are given at the end of each practical to test practical skills. Categories of Practical Skills are given after the list of experiments. According to marking scheme issued by the CBSE, Sample Question Papers have been given at the end of experiments of each term. Students and teachers are requested to send their suggestions for the improvement of the book. AUTHORS xi
SYLLABUS PRACTICALS CLASS IX Practical should be conducted alongside the concepts taught in theory classes
FIRST TERM List of Experiments 1. To test a the presence of starch in the given food sample b the presence of the adulterant metanil yellow in dal. 2. To Prepare