Aqueous solution of which of the following compounds is used to detect carbon dioxide:

Sr(OH)₂

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Mg(OH)₂

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Ca(OH)₂

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Be(OH)₂

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Solution

The correct option is C
Ca(OH)₂

Aqueous solution of Calcium hydroxide (lime water) gives a white precipitate of Calcium carbonate and carbon dioxide gas is evolved.

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B a (O H)_{2} > S r (O H)_{2} > C a (O H)_{2} > B e (O H)_{2}

H_{2} O ?

(1) B e S O_{4} > M g S O_{4} > C a S O_{4} > B a S O_{4}

(2) B e (O H)_{2} > M g (O H)_{2} > C a (O H)_{2} > B a (O H)_{2}

(3) L i O H < N a O H < K O H < R b O H

(4) L i_{2} C O_{3} < N a_{2} C O_{3} < K_{2} C O_{3} < R b_{2} C O_{3}

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B (O H)_{3}

Which of the following compond is used to detect the presence of carbon dioxide in the experiment to demonstrate anaerobic respiration.

C O_{2}

C O_{2}

K_{2} C O_{3}

C O_{2}

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