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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Eduncle
Dear Deepika,
Greetings!!
4 ppm Calcium means 4000 μg Calcium. So in CaCO3
40 gm Calcium is present in 100 gm CaCO3, so 4000 μg Calcium will present in 10 mg CaCO3
So the answer is 10 mg CaCO3 is required.
Thank You for asking your query.