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JEE CHEMISTRY MCQ: PRACTICAL CHEMISTRY

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NiS\text{NiS} is separated from ZnS\mathrm{ZnS} by treating with
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Correct option: B
conc. HCl\mathrm{HCl}
Option B (conc. HCl\mathrm{HCl}) is correct because NiS\mathrm{NiS} is insoluble in conc. HCl\mathrm{HCl} while ZnS\mathrm{ZnS} is soluble.

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