1
KCET 2022
MCQ (Single Correct Answer)
+1
-0

$$\left(\mathrm{NH}_4\right)_2 \mathrm{Cr}_2 \mathrm{O}_7$$ on heating liberates a gas. The same gas will be obtained by

A
heating $$\mathrm{NH}_4 \mathrm{NO}_2$$
B
treating $$\mathrm{H}_2 \mathrm{O}_2$$ with $$\mathrm{NaNO}_2$$
C
treating $$\mathrm{Mg}_3 \mathrm{~N}_2$$ with $$\mathrm{H}_2 \mathrm{O}$$
D
heating $$\mathrm{NH}_4 \mathrm{NO}_3$$
2
KCET 2022
MCQ (Single Correct Answer)
+1
-0

The strong reducing property of hypophosphorus acid is due to

A
the positive valency of phosphorus
B
two $$\mathrm{P}-\mathrm{H}$$ bonds
C
presence of phosphorus in its highest oxidation state
D
its concentration
3
KCET 2021
MCQ (Single Correct Answer)
+1
-0

In the detection of II group acid radical, the salt containing chloride is treated with concentrated sulphuric acid, the colourless gas is liberated. The name of the gas is

A
hydrogen chloride gas
B
chlorine gas
C
sulphur dioxide gas
D
hydrogen gas
4
KCET 2021
MCQ (Single Correct Answer)
+1
-0

The number of six membered and five membered rings in Buckminster fullerene respectively is

A
20, 12
B
12, 20
C
14, 18
D
14, 11
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