Main constituent of limestone is$? – McqOptions

MCQOPTIONS

1.	Main constituent of limestone is$?
A.	CaCO‚Äö√á√â
B.	MgCO‚Äö√á√â
C.	Na‚Äö√á√áCO‚Äö√á√â
D.	CaSO‚Äö√á√ë
Answer» B. MgCO‚Äö√á√â

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