Question

Which one of the following gas will turn the lime water milky?
A) Carbon dioxide
B) Carbon monoxide
C) Nitrogen
D) Chlorine

Answer 1

Answer:

a). option is correct.

Carbon dioxide.

More information :

Chemical reaction :

When Calcium hydroxide react with carbon dioxide to form Calcium carbonate which turns it milky also produces water as by-product.

Chemical equation :

Ca ( OH )₂ + CO₂   ⇒  CaCO₃ + H₂O

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Answer 2

Answer:

Which one of the following gas will turn the lime water milky?

a) Carbon dioxide

Information about it -

☆ When carbon dioxide is passed through lime water, calcium carbonate is formed, which makes lime water milky. The turning of lime water into milky is a standard test of carbon dioxide.

Chemical Equation -

CO2 + Ca(OH)2 → CaCO3 + H2O

Carbon dioxide + Lime water → Calcium Carbonate + Water

Note - see the diagram for better understanding