1
KCET 2018
MCQ (Single Correct Answer)
+1
-0
Very pure $\mathrm{N}_2$ can be obtained by
A
thermal decomposition of ammonium dichromate
B
treating aqueous solution of $\mathrm{NH}_4 \mathrm{Cl}$ and $\mathrm{NaNO}_2$
C
liquefaction and fractional distillation of liquid air
D
thermal decomposition of sodium azide
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