Chapter 21: Class 7 Science Exam Tests
Class 7 Science MCQs - Chapter 21
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MCQ 11: Dilute acids and alkalis react together to form
MCQ 12: Fuel obtained from fossils is known as
MCQ 13: The process in which reactants react together to form a product, is called
MCQ 14: If two or more substances are combined to form a new substance, the chemical reaction is termed as
MCQ 15: When substance combines with oxygen while burning, the reaction is termed as
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