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Why is the same type of nail used in all test tubes? ​in every experiment done to show how rusting works and in what conditions.
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Why is the same type of nail used in all test tubes? ​in every experiment done to show how rusting works and in what conditions.

User Stucharo
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in test tube 1 iron nail gets both air and moisture which is required for rusting. ... in the test tube 3 iron nail is not rusted because of the calcium chloride which is moisture absorber. hence nail would not get moisture for the rusting.

User Krutarth Patel
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