Q.

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

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a

104.4 kg

b

105.4 kg

c

212.8 kg

d

106.4 kg

answer is D.

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Detailed Solution

CaCO3  →   CaO+CO2100g               56g   44g100 g  CaCO3 give =  56  g CaO1 g CaCO3  give  =  56100  g CaO200 ×  95100×103  g CaCO3  give  =  56100 ×  200 ×  95100×103g =1064×102g= 106.4  kg(200Kg of 95% CaCO3=200×95100Kg = 200×95100×103g)
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Calculate the weight of lime (CaO) obtained by heating 200 kg of 95% pure lime stone CaCO3.