Class 9 physics Practice Tests
Class 9 Physics Online Tests
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MCQ 1: The change in the quality of the environment that can be harmful and unpleasant for living things is called
MCQ 2: A temperature rise in the environment that disturbs life is called
MCQ 3: Natural processes such as volcanic eruptions, forest fires causes
MCQ 4: The value of the speed of light is
MCQ 5: Fossil fuels are burnt to produce electricity in
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