write the materials required and chemical used in conducting an experiment in which hydrogen gas is evolved
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The experiment is done first on a smaller scale using test-tubes (Lesson 1 below), with no attempt to recover the salts formed. This establishes that hydrogen production is a characteristic property of the reaction of metals and acids. It can then be done on a larger scale (Lesson 2 below), and the salts formed can be recovered by crystallisation,
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Answer:zinc granules and HCl
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