Question

11. A student planned to prepare hydrogen gas in the laboratory by taking zinc granules and dilute
sulphuric acid. What will happen if he uses :
(i) same amount of zinc dust in place of zinc granules.
(ii) same amount of copper in place of zinc.
(iii) sodium hydroxide solution in place of sulphuric acid.

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Answer 1

Explanation:

(d) Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated. Answer: (a) It same amount of zinc dust is taken in the test tube then the reaction will be comparatively faster and hydrogen gas will evolve with greater speed. ... Hence, no reaction will take place