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

oxygen

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water vapour

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nitrogen

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carbon dioxide

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Solution

The correct option is D carbon dioxide
The correct answer is (b) carbon dioxide.

Carbon dioxide dissolves in the solution of lime water which is a solution of calcium hydroxide.

Carbon dioxide after adding to the lime water reacts with the calcium hydroxide to form a white precipitate of calcium carbonate. Thus, lime water turns milky when comes in contact with carbon dioxide.

$C a (O H)_{2} + C O_{2} \to C a C O_{3} ↓ + H_{2} O$

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Similar questions

When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of :
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) water vapour

Question 11
When air is blown from the mouth into a test-tube containing limewater, the limewater turned milky due to the presence of

(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) water vapour

Q. When air is blown from the mouth into a test-tube containing lime water, the lime water turned milky due to the presence of _____________.

Q. When air is blown from the mouth into a test-tube containing limewater, the limewater turned milky due to the presence of

Q. Statement 1: Exhaled air contains a higher concentration of carbon dioxide than inhaled air.
Statement 2: When air is blown in from the mouth into a test tube containing lime water, the lime water turns milky.

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