a) What is the role of fused CaCl₂ in test tube A? (2) b) What are the two necessary conditions required for rusting? (2) c) In which test tube will the iron nail rust? (1)
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a) What is the role of fused CaCl₂ in test tube A? (2) b) What are the two necessary conditions required for rusting? (2) c) In which test tube will the iron nail rust? (1)
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Answer:
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