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Reported Question / Answer
Q.) The formula of calcium hydrogen carbonate is
1)
Ca(HCO<sub>3</sub>)<sub>3</sub>
2)
HCO<sub>3</sub>Ca<sub>2</sub>
3)
Ca<sub>2</sub>(HCO<sub>3</sub>)<sub>2</sub>
4)
Ca(HCO<sub>3</sub>)<sub>2</sub>
5)
NULL
Answer :
4
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