For JEE Chemistry Lovers

Chemistry Level 2

A sample of limestone contains some impurity ( not Calcium or it's compounds) . If 10 grams of it on calcination gives 4.48 grams of pure solid residue, then which of the following statements is false ? Assume limestone is completely decomposed to Calcium Oxide and Carbon Dioxide during heating .

The percentage purity of limestone is 80% The impurity is volatile . The volume of Carbon Dioxide liberated occupies 1.792 L at STP. The mass of Carbon Dioxide liberated is 4.52 grams.

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