Chapter 9: Class 9 Physics Exam Tests
Class 9 Physics MCQs - Chapter 9
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MCQ 16: The energy obtained from electric cells and batteries as a result of a chemical reaction is called
MCQ 17: Anna carries a 12 kg bag upstairs to a height of 15 steps. The amount of work she has done is
MCQ 18: The change in the quality of the environment that can be harmful to living things is called
MCQ 19: The interconversion of matter and energy is predicted by
MCQ 20: When a body is lifted through a height h, the work done on it appears in the form of its
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