Which salt can be dissolved in distilled water to make it hard?
(A) NaCl, KCl
(B) Na2SO4, K2SO4
(C) Na2SO4, CaSO4
(D) CaSO4, CaCl
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8
caso4 and cacl2 can be used
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6
caso4,cacl is nt it 10th sci paper
RaunakRaj:
yes it is 10th Board ques
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