The gas which turns lime water milky is

(a) oxygen
(b) carbon dioxide
(c) hydrogen
(d) nitrogen

Q.

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

Q.

Question 18

Explain the following:

(a) Lime water turns milky on passing carbon dioxide gas into it.
(b) Bubbles are produced when acetic acid is added to a solution of sodium hydrogen carbonate.

Q. Why lime water turns milky due to formation of white precipitate of calcium carbonate , when carbon dioxide gas is passed through lime water ?

Q. Carbon dioxide turns lime water milky.

Q. Assertion (A) : Carbon dioxide turns lime water milky.
Reason (R) : Carbon dioxide sullies the water.