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VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

A colourless solid $$(X)$$ on heating evolved $$\mathrm{CO}_2$$ and also gave a white residue, soluble in water. Residue also gave $$\mathrm{CO}_2$$ when treated with dilute acid. $$(X)$$ is

A
$$\mathrm{Na}_2 \mathrm{CO}_3$$
B
$$\mathrm{CaCO}_3$$
C
$$\mathrm{Ca}\left(\mathrm{HCO}_3\right)_2$$
D
$$\mathrm{NaHCO}_3$$
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