1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The number of moles of electron required to reduce 0.2 mole of $$\mathrm{Cr}_2 \mathrm{O}_7^{-2}$$ to $$\mathrm{Cr}^{+3}$$ is

A
1.2
B
6
C
12
D
0.6
2
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Which of the following statement is correct?

A
$$\mathrm{Cl}_2$$ oxidises $$\mathrm{H}_2 \mathrm{O}$$ to $$\mathrm{O}_2$$ but $$\mathrm{F}_2$$ does not
B
$$\mathrm{Cl}_2$$ is a stronger oxidising agent than $$\mathrm{F}_2$$
C
$$\mathrm{F}_2$$ oxidises $$\mathrm{H}_2 \mathrm{O}$$ to $$\mathrm{O}_2$$ but $$\mathrm{Cl}_2$$ does not
D
Fluoride is a good oxidising agent
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

In the reaction of gold with aquaregia, oxidation state of nitrogen changes from

A
+4 to +2
B
+6 to +4
C
+5 to +2
D
+3 to +1
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