Q. 2. Which one of the following processes involve
chemical reactions?
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Which one of the following processes involve chemical reactions? (a) Storing of oxygen gas under pressure in a gas cylinder. (b) Liquefaction of air. (c) Keeping petrol in a china dish in the open. (d) Heating copper wire in presence of air at high temperature.29 मई 2015
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Don't write incomplete question.
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