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
2
KCET 2017
MCQ (Single Correct Answer)
+1
-0
Which of the following metallic oxide exhibit amphoteric nature?
A
CaO
B
$\mathrm{Al}_2 \mathrm{O}_3$
C
$\mathrm{Na}_2 \mathrm{O}$
D
BaO
KCET Subjects
EXAM MAP