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प्रश्न
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.
उत्तर
When calcium carbonate reacts with dil. 2HCl, gas evolved in CO2.
\[\ce{CaCO3 + 2HCl [dil.]->CaCl2 + H2O + CO2 (g)}\]
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