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A compound of calcium (X) is used i9n su...

A compound of calcium (X) is used i9n sugar industry for the purification of sugar. When exposed to an oxy-hydrogen flame, it becomes incandascent and starts emitting white light. On treatment with `CO_2` it forms a compound, which can be decomposed to give back X at very high temperature. X is

A

`CaCO_3`

B

CaO

C

`Ca(OH)_2`

D

`CaSO_4`

Text Solution

Verified by Experts

The correct Answer is:
C
Calcium oxide is used to purify cane sugar juice. When heated strongly it gives white light called 'limestone'. With `CO_2` it forms `CaCO_3`
`underset(X)CaO+CO_2toCaCO_3`
`CaCO_3overset(Delta)toCaO+CO_2`
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