A. AgCl
B. CaSO4
C. Na2CO3
D. PbCl2
Correct Answer:
Option B – CaSO4
Explanation
All sulfates are soluble except those of barium, strontium and lead. Calcium sulfate, silver sulfate and mercurous sulfate are slightly soluble in water, but calcium sulfate is rarely precipitated in reactions between the calcium and sulfate ions.
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