Thermal decomposition of a compound $(X)$ yields a basic oxide $(Y)$ and an acidic oxide $(Z)$ simultaneously.The acidic oxide $(Z)$ can be absorbed by alkaline $K O H$ then $X, Y, Z$ are respectively:

C a H C O_{3}, O_{2}, C O_{2}

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C a O, M g O, C O_{2}

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C a C O_{3}, C a O, C O_{2}

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Solution

The correct option is D $C a C O_{3}, C a O, C O_{2}$
Option $(C)$ is correct.
$C a C O_{3} [X] \to C a O [Y] + C O_{2} [Z]$
$C a O$ is basic oxide and $C O_{2}$ is acidic oxide.
$K O H$ is a strong base (alkali) and $C O_{2}$ is an acidic oxide. So, the two readily react to form salt and water.
$2 K O H + C O_{2} \to K_{2} C O_{3} + H_{2} O$

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