Write any four oxidising properties of potassium dichromate. 

Which of the following compounds is used as the starting material for the preparation of potassium dichromate?

Describe the oxidising action of potassium dichromate and write the ionic equations of reaction with: (i). Iodide (ii). Iron (II) solution and (III). H_2S

Describe the oxidising action of potassium dichromate and write the ionic equations of reaction with: (i). Iodide (ii). Iron (II) solution and (III). H_2S

Describe the preparation of potassium permanganate. How does the acidicfied permanganate solution react with oxalic acid? Write the ionic equation for the reaction. OR Describe the oxidising action of potassium dischromate and write the ionic equaitons for its reaction with (i) an iodide (ii) H_(2)S .

Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with oxalic acid? Write the ionic equation for the reaction. OR Describe the oxidising action of potassium dischromate and write the ionic equations for its reaction with (i) an iodide (ii) H_(2)S .

The colour of potassium dichromate is due to

Describe the preparation of potassium dichromate from iron chromite ore.What is the effect of increasing pH on a solution of potassium dichromate?

Discuss any four properties of a magnet.

Write the balanced chemical equations for the following reactions: (i). A mixture of potassium dichromate and sodium chloride is heated with concentrated H_2SO_4 . (ii). Potassium peramanganate is added to a hot solution of manganous sulphate.

When SO_(2) is passed through acidic solution of potassium dichromate, then chromium sulphate is formed. Change in valency of chronium is