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Calculate the weight of lime (CaO) obtained by heating 200 kg of 95% pure lime stone (CaCO3).

(1) 104.4 kg 

(2) 105.4 kg

(3) 212.8 kg 

(4) 106.4 kg

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Correct Answer is: (4) 106.4 kg

∵ 100 kg impure sample has pure CaCO3 = 95 kg

∴ 200 kg impure sample has pure CaCO3

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