Chapter 7: Class 10 Chemistry Exam Tests
Class 10 Chemistry MCQs - Chapter 7
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MCQ 26: What happens to water on cooling?
MCQ 27: Out of total the amount of water available for human use is
MCQ 28: What is the percentage of atmospheric water?
MCQ 29: Step of sewage water treatment in which some of the solids are removed as sludge is called
MCQ 30: The second step of sewage water treatment is called
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