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प्रश्न
The compound (X) on heating gives a colourless gas and a residue that is dissolved in water to obtain (B). Excess of CO2 is bubbled through aqueous solution of B, C is formed. Solid (C) on heating gives back X. (B) is
विकल्प
CaCO3
Ca(OH)2
Na2CO3
NaHCO3
उत्तर
Ca(OH)2
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