17
MCQ (Single Correct Answer)
On heating ammonium dichromate and barium azide separately we get
A
$\mathrm{N}_2$ in both cases
B
$\mathrm{N}_2$ with ammonium dichromate and NO with barium azide
C
$\mathrm{N}_2 \mathrm{O}$ with ammonium dichromate and $\mathrm{N}_2$ with barium azide
D
$\mathrm{N}_2 \mathrm{O}$ with ammonium dichromate and $\mathrm{NO}_2$ with barium azide
18
MCQ (Single Correct Answer)
In the preparation of $\mathrm{HNO}_3$, we get NO gas by catalytic oxidation of ammonia. The moles of NO produced by the oxidation of two moles of $\mathrm{NH}_3$ will be ............ .
A
2
B
3
C
4
D
6
19
MCQ (Single Correct Answer)
The oxidation state of central atom in the anion of compound $\mathrm{NaH}_2 \mathrm{PO}_2$ will be ........... .
A
+3
B
+5
C
+1
D
$-$3
20
MCQ (Single Correct Answer)
Which of the following is not tetrahedral in shape?
A
$\mathrm{NH}_4^{+}$
B
$\mathrm{SiCl}_4$
C
$\mathrm{SF}_4$
D
$\mathrm{SO}_4{ }^{2-}$
21
MCQ (Single Correct Answer)
Which of the following are peroxoacids of sulphur?
A
$\mathrm{H}_2 \mathrm{SO}_5$ and $\mathrm{H}_2 \mathrm{S}_2 \mathrm{O}_8$
B
$\mathrm{H}_2 \mathrm{SO}_5$ and $\mathrm{H}_2 \mathrm{S}_2 \mathrm{O}_7$
C
$\mathrm{H}_2 \mathrm{S}_2 \mathrm{O}_7$ and $\mathrm{H}_2 \mathrm{S}_2 \mathrm{O}_8$
D
$\mathrm{H}_2 \mathrm{S}_2 \mathrm{O}_6$ and $\mathrm{H}_2 \mathrm{S}_2 \mathrm{O}_7$