Chapter 14: Class 7 Science Exam Tests
Class 7 Science MCQs - Chapter 14
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MCQ 56: The alum is a compound of two elements, those are
MCQ 57: The most essential element for crop is
MCQ 58: If not receives treatment, trachoma may cause
MCQ 59: The reason for presence of water underground is
MCQ 60: The largest sea on the earth is
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