Q.

The volume of carbon dioxide at NTP evolved by strong heating of 20 g of calcium carbonate is 

CaCO3CaO+CO2

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a

4.0 lts

b

2.24 lts

c

8.0 lts

d

4.48 lts

answer is B.

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Detailed Solution

CaCO3CaO+CO2

100g of CaCO322.4lit of CO2

20g of CaCO3x lit of CO2

Then x=20g100g×22.4 lit=4.48 lit

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