Chapter 9: Class 7 Science Exam Tests
Class 7 Science MCQs - Chapter 9
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MCQ 36: Although solar energy is safe, free of pollution and freely available but it is difficult to
MCQ 37: Plankton (marine micro-organism), buried under heat and pressure for a long period, turned in to
MCQ 38: Coal, crude, petroleum and natural gas are examples of
MCQ 39: The heat obtained from solar furnace is used to drive
MCQ 40: An alcohol which is produced from sugarcane, corn and other plants by fermentation is called
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