Practice Class 7 MCQs From Textbooks
Free Physical and Chemical Changes MCQ App Download | Class 7 Science e-Book PDF
Class 7 Science Entrance Tests: Practice Test 18 (Chapter 17)
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The least kinetic energy is found in
Plastics are made up of
In chemical reactions, energy is absorbed or released in the form of
Chemical reactions are
Polyethene is used to make
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