19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
A mole of N₂H₄ loses 10 mol of electrons to form a new compound Y. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in Y? (There is no change in the oxidation number …
MnO₄ - is a good oxidizing agent in different medium changing to MnO Mn MnO MnO Mn O → → → → Changes in oxidation number respectively, are
The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is
The oxidation states of sulfur in the anions SO , S O and S O follow the order (a) S O S O SO (b) S O S O SO (c) S O SO S O (d) SO S O S O
Oxidation state of nitrogen is correctly given for Compound Oxidation State
+3 oxidation state is most common in
Oxidation number of iodide in IO ,IO ,KI and I respectively, are
When sulfur dioxide is passed in an acidified K₂Cr₂O₇ solution, the oxidation state of sulfur is changed from
The oxidation states of iodine in HIO₄, H₃IO₅ and H₅IO₆ respectively, are
In which of the following reactions, there is no change in valency? (a) SO 2H S 2H O 3S → (b) 2Na O 2Na O → (c) Na O H SO Na SO H O → (d) 4KClO 3KClO KCl → Ans (c) Sol. The oxidation states of central atom in each giv…
Which of the following molecules has least oxidation number of central atom?
In which of the following compounds is the oxidation state of C highest?
The oxidation states of the most electronegative elements in the products of the reaction between BaO₂ and H₂SO₄ are
Oxidation number of carbon in CCl is :
The oxidation number of C in CH₂O is
Which one of the following reaction involves oxidation- reduction?
The oxidation state of Fe in Fe₃O₈ is
In which of the following processes is nitrogen oxidized? (a) NH N → (b) NO NO → (c) NO NO → (d) NO NH → Ans (a) Sol. o NH N → Oxidation state of N = -3 Oxidation state of N = 0 In the other reaction, the oxidation st…
The oxidant which cannot act as a reducing agent is
The oxidation number S in Na₂S₄O₆ is
The oxidation number of P in Mg₂P₂O₇ is
The oxidation number of Pr in Pr₆O₁₁ is
Oxidation number of Cl in CaOCl₂ (bleaching powder) is
The oxidation number of carbon in CH₂Cl₂ is
The oxidation number of nitrogen in NaNO₂ is