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Jishaan
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Asked: 2021-12-08T10:59:01+00:00 In:

When air is blown from mouth into a test tube containing lime water, the lime water turns milky due to the presence of:

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Poll Results

0%[A] Oxygen
75%[B] Carbon dioxide ( 3 voters )
25%[C] Nitrogen ( 1 voter )
0%[D] Water vapour
Based On 4 Votes

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As we know that when the exhaled air rich in carbon dioxide is blown from mouth into test tube. The lime water turns milky on passing CO₂ gas into it due to formation of insoluble calcium carbonate (CaCO3). As it reacts with lime water (calcium hydroxide – Ca(OH)₂) to produce calcium carbonate and water.

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      [B] Carbon dioxide
      As we know that when the exhaled air rich in carbon dioxide is blown from mouth into test tube. The lime water turns milky on passing CO₂ gas into it due to formation of insoluble calcium carbonate (CaCO3). As it reacts with lime water (calcium hydroxide – Ca(OH)₂) to produce calcium carbonate and water.

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