Omission of (a) fasttt...
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ONE FINE DAY (A) LONG TIME AGO
sneha060804:
Answer is a?
U mean..
A long time ago
yup
Ok thanks
wello☺
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Explanation:
Pure calcium carbonate can be produced from marble, or it can be prepared by passing carbon dioxide into a solution of calcium hydroxide. In the later case calcium carbonate is derived from the mixture, forming a grade of product called "precipitated calcium carbonate,” or PCC.
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