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Question

Lime water becomes turbid on passing NO2 through it.
If this is true enter 1, if false enter 0.

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Solution

Lime water becomes turbid on passing CO2.
Carbon dioxide passed into limewater gives a milky solution. This is due to the insoluble suspension of calcium carbonate formed:
Ca(OH)2(aq)+CO2(g)CaCO3(s)+H2O(l)
Lime water reacts with NO2 and oxygen to produce calcium nitrate that is soluble in water.
Ca(OH)2(aq)+O2+NO2(g)Ca(NO3)2(s)+H2O(l)

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