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प्रश्न
A colourless solid substance (A) on heating evolved CO2 and also gave a white residue, soluble in water. Residue also gave CO2 when treated with dilute HCl.
विकल्प
Na2CO3
NaHCO3
CaCO3
Ca(HCO3)2
उत्तर
NaHCO3
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