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Chemical Change and Chemical Bond — Science STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8ScienceChemical Change and Chemical Bond3 Marks
Question
Explain : Limestone powder disappears on adding to dilute hydrochloric acids.
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Answer

In the reaction of dil. HCl and limestone powder $\left( CaCO _3\right)$, limestone disappears slowly and carbon dioxide $\left( CO _2\right)$ liberates slowly.

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