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Q.

Calculate the mass of lime $(C a O)$ obtained by heating 200kg of 95% pure lime stone $(C a C O_{3})$

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a

104.4 kg

b

106.4 kg

c

105.4 kg

d

212.8 kg

answer is D.

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Detailed Solution

Mass of pure $C a C O_{3} = 200 \times \frac{95}{100} = 190 k g$

$\begin{array}{l} C a C O_{3} \overset{Δ}{\to} C a O + C O_{2} \\ 100 g 56 \\ 1 g \frac{56}{100} \\ 190 k g \frac{56}{100} \times 190 k g = 106.4 k g \end{array}$

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