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Which of the following in incorrect for `CaCO_(3)` ?

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Which of the following in incorrect for `CaCO_(3)` ?
A. It is a white fluffy powder.
B. It is almost insoluble in water.
C. When heated to 1200 K, it decomposes to evolve `O_(2)`.
D. it reacts with dilute acid to liberate `CO_(2)`.
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Correct Answer - C
It decomposes to evolve `CO_(2)`:
`CaCO_(3)(s)overset(1200K)toCaO(s)+CO_(2)(g)`
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