1.

Mass if `CO_(2)` Produced on heating 20g of 40% pure limestone :-A. 8gmB. 8.8gmC. 3.52gmD. none of these

Answer» Correct Answer - C
`{:(CaCO_(3),to, CaO,+CO_(2),),( 100g , ,56g , 44g,):}`
wt of pure limestone ` = (20xx40)/(100)=8gm`
100 gm pure `CaCO _(3)` produce ` to 44g CO_(2)`
8 g pure `Caco_(3)` produce to `3.52 g CO_(2)`


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