Which of the following compounds on thermal decomposition yields a basic as well as an acidic oxide?

K C l O_{3}

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N a N O_{3}

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K_{2} C O_{3}

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M g C O_{3}

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Solution

The correct option is B $M g C O_{3}$
$M g C O_{3} Δ - \to M g O + C O_{2}$
Since oxides of metals are basic in nature, $M g O$ is basic, and $C O_{2}$ is acidic. Hence decoposition of $M g C O_{3}$ yields both acidic and basic oxides

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