List of top Chemistry Questions on Oxidation Number asked in JEE Main

In an oxidation-reduction reaction, what happens to the oxidation state of the central atom in \( \text{MnO}_4^- \) when it is reduced to \( \text{Mn}^{2+} \)?
Which of the following compounds in 3d series does not show +3 oxidation state?
Oxidation state of Fe(iron) in complex formed in brown ring test
Which of the following options contain amphoteric oxide(s) only?
Alkaline KMnO4 Oxidised iodide to a particular product (A). Determine the oxidation state of iodine in the compound (A).
Sum of oxidation states of bromine in bromic acid and perbromic acid is ——-.

$H _2 O _2$ acts as a reducing agent in

In the following given reaction, ' $A$ ' is

In the following given reaction, ' A ' is

The difference in the oxidation state of \(Xe\) between the oxidised product of \(Xe\) formed on complete hydrolysis of \(XeF_4\) and \(XeF_4\) is _____ .
The total change in the oxidation state of manganese involved in the reaction of KMnO4 and potassium iodide in the acidic medium is______
Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula?
Which of the given reactions is not an example of a disproportionation reaction?
The dark purple colour of \(KMnO_4\) disappears in the titration with oxalic acid in acidic medium. The overall change in the oxidation number of manganese in the reaction is :
Manganese (VI) has ability to disproportionate in acidic solution. The difference in oxidation states of two ions it forms in acidic solution is _____.
The oxidation states of $Cr$ in $ [Cr(H_2O)_6]Cl_3, [Cr(C_6H_6)_2]$, and $K_2[Cr(CN)_2(O)_2(O_2)(NH_3)]$ respectively are :
Oxidation state of sulphur in anions $SO^{2-}_{3}. S_{2}O^{2-}_{4}$ and $S_{2}O^{2-}_{6}$ increases in the orders:
Which of the following will be oxidized by \(HIO_4\)?
Which of the following will be oxidized by HIO4
Highest oxidation state of $Mn$ is exhibited in $Mn _2 O _7$ The correct statements about $Mn _2 O _7$ are
(A) Mn is tetrahedrally surrounded by oxygen atoms
(B) $Mn$ is octahedrally surrounded by oxygen atoms
(C) Contains $Mn-O-Mn$ bridge
(D) Contains $Mn - Mn$ bond
Choose the correct answer from the options given below:
For which of the following elements, only one oxidation state is possible?