Chemistry Question Bank

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…

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

The oxidation state of chromium in Cr(CO)₆ is:

Oxidation number of nitrogen in (NH₄)₂SO₄ is