A chemical method of removal of NO−2 is to boil the mixture with NH4Cl.
A
True
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B
False
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Solution
The correct option is A True To remove NO−2 from the solution, it is boiled with ammonium chloride solution. NO−2 decomposes to nitrogen. NaNO2+NH4Cl△⟶NaCl+N2↑+2H2O