Kalyani was heating an ore X of Zinc in absence of air. She observed that a gas Y is evolved in this process. When she passed the gas through a solution of slaked lime, it turned milky. The ore X and gas Y are-

X is $Z n S O_{4}$ and Y is $S O_{2}$

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X is $Z n C O_{3}$ and Y is $C O_{2}$

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X is $Z n S$ and Y is $S O_{2}$

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X is $Z n (N O_{3})_{2}$ and Y is $N O_{2}$

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Solution

The correct option is B
X is $Z n C O_{3}$ and Y is $C O_{2}$

Carbonate ores are heated in absence of air, so X is $Z n C O_{3}$ . Decomposition of $Z n C O_{3}$ releases $C O_{2}$ gas which turns solution of slaked lime milky. So, Y is $C O_{2}$ .

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Similar questions

When X gas is passed through lime water, it turns milky. The milkiness is caused due to the formation of Y. Identify X and Y from the following.

K M n O_{4}

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When a gas X is passed through limewater, it turns milky due to the formation of a precipitate Y. Identify X and Y.

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