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1
MHT CET 2025 19th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

What are the respective oxidation states of sulphur atoms numbered 1 to 4 in tetrathionate ion shown below?

A
$0,+5,+5,0$
B
$+5,0,0,+5$
C
$+2,0,0,+2$
D
$+2,-1,-1,+2$
2
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the oxidation number of Mn in $\mathrm{MnO}_4^{-}$?

A
$-$5
B
5
C
6
D
7
3
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the oxidation state of phosphorus in phosphate ion?

A
$-5$
B
$+3$
C
$+5$
D
$+6$
4
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is change in oxidation number of nitrogen when $\mathrm{NO}_3^{-}$is converted to $\mathrm{NH}_4^{+}$ion?

A
$+5$ to $-3$
B
$+3$ to $-5$
C
$-3$ to $+5$
D
$-5$ to $+3$
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