Chapter 3: Class 9 Chemistry Exam Tests
Class 9 Chemistry MCQs - Chapter 3
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MCQ 31: If one mole of carbon contains x atoms then the number of atoms in 12g of Mg are
MCQ 32: A science that examines the material this universe contains and changes in them is called
MCQ 33: The molecular mass of glucose is
MCQ 34: Negatively charged ions are called
MCQ 35: The number of atoms of hydrogen in 2 moles of NH3
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