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1
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the change in oxidation number of S in following reaction?

$$\mathrm{H}_2 \mathrm{~S}+\mathrm{NO}_3^{-} \longrightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{NO}+\mathrm{S}$$

A
$-2$ to 0
B
0 to $-2$
C
$-2$ to +2
D
0 to +2
2
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the oxidation number of carbon in $\mathrm{K}_2 \mathrm{C}_2 \mathrm{O}_4 ?$

A
$-2$
B
$-3$
C
$+3$
D
$+4$
3
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the oxidation state of iodine in $\mathrm{I}_2 \mathrm{Cl}_6$ ?

A
+7
B
$-$3
C
+3
D
$-$2
4
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following changes involves transfer of 5 electrons?

A
$\mathrm{MnO}_4^{-} \longrightarrow \mathrm{Mn}^{2+}$
B
$\mathrm{CrO}_4^{2-} \longrightarrow \mathrm{Cr}^{3+}$
C
$\mathrm{NO}_3^{-} \longrightarrow \mathrm{NH}_4^{+}$
D
$\mathrm{Cr}_2 \mathrm{O}_7^{2-} \longrightarrow 2 \mathrm{Cr}^{3+}$
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