Potassium dichromate is used
(A) In leather industry
(B) As an oxidant for preparation of many azo compounds
(C) Both (1) and (2)
(D) As reducing agent

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

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

(a) Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver ? (b) Out of C and CO, which is a better reducing agent at the lower temperature rangein the blast furnace to extract iron form the oxide ore ?