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Identify the correct order of acidic strength of `CO_(2),CuO, CaO` and `H_(2)O`.

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Identify the correct order of acidic strength of `CO_(2),CuO, CaO` and `H_(2)O`.
A. `CaO lt CuO lt H_(2)O lt CO_(2)`
B. `H_(2)O lt CuO lt CaO lt CO_(2)`
C. `CaO lt H_(2)O lt CuO lt CO_(2)`
D. `H_(2)O lt CO_(2) lt CaO lt CuO`
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Correct Answer - A
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