View PDF CBSE Class 10 Science Sample Paper Solved 2021 Set E

SECTION A   1. Why reproduction is considered to be an essential phenomenon in organisms?    2. What is Ganga action plan?    SECTION B   3. i) What is meant by water harvesting?   ii) Write two advantages of storing water in the ground.   4. Compare and contrast bio-mass and hydroelectricity as a source of energy                                                                  OR   What are the four characteristics of a good source of energy?   5. State the difference between acquired trait and inherited trait.    SECTION C   6. (a) Why tungsten is used in


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