Class 9 chemistry Practice Tests
Class 9 Chemistry Online Tests
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MCQ 1: Metal that difficult to oxidize are called
MCQ 2: On contact with oxygen, Rubidium forms
MCQ 3: The most metallic among the following is
MCQ 4: As we move across the period from left to right, the reactivity of metals with oxygen
MCQ 5: The sodium metal is soft due to
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