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Study of the First Element - Hydogen — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYStudy of the First Element - Hydogen2 Marks
Question
How will you prepare hydrogen gas in laboratory’? State three precautions necessary for the collection of hydrogen.
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Answer

Hydrogen is prepared in the laboratory by the action of the dilute hydrochloric acid or dilute sulphuric acid on granulated zinc. Granulated zinc gives more surface area for the acid to act, so hydrogen is formed faster

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