Q.

The weight of lime obtained by heating 200 kg of 95% pure lime stone is

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a

98.4 kg

b

106.4 kg

c

112.8 kg

d

122.6 kg

answer is B.

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Detailed Solution

2OO kg of 95% pure means, 95100×200=190 kgCaCO3⟶ΔCaO+CO2(40+12+3×16)  (40+16)100                      56190                       w∵ 100 g of CaCO3 on heating gives 56g of lime∴ 190000 g of CaCO3 on heating will give lime        =56×190000100 = 106,400 g =106.4kg
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