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

ICSE BoardEnglish MediumSTD 9CHEMISTRYStudy of the First Element - Hydrogen1 Mark
Question
Name the impurities present in hydrogen prepared in the laboratory.
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Answer

Hydrogensulphide,sulphurdioxide, oxides of nitrogen,phosphine, arsine, carbon dioxide and watervapourare impurities present in the laboratory.

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