1
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the oxidation number of Cr in $\mathrm{CrO}_4^{2-}$ ion and $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ respectively.

A
+4 and +6
B
+3 and +2
C
+6 and +6
D
+8 and +2
2
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct statement for following reaction.

$$3 \mathrm{Mg}+\mathrm{N}_2 \longrightarrow \mathrm{Mg}_3 \mathrm{~N}_2$$

A
Mg is reduced
B
Mg is oxidised
C
$\mathrm{N}_2$ is oxidised
D
oxidation state of Mg changes from +2 to zero
3
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is oxidation number of S in $\mathrm{SO}_3^{2-}$ ?

A
$-2$
B
$-3$
C
$+4$
D
$+6$
4
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
MHT CET Subjects
EXAM MAP