White vitriol is : (a) \( \mathrm{ZnS} \) (b) \( \mathrm{ZnSO}_{4} \) (c) \( \mathrm{ZnSO}_{4} \...

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White vitriol is :
(a) \( \mathrm{ZnS} \)
(b) \( \mathrm{ZnSO}_{4} \)
(c) \( \mathrm{ZnSO}_{4} \cdot 7 \mathrm{H}_{2} \mathrm{O} \)
(d) \( \mathrm{ZnCO}_{3} \)
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