Question

(b) Molybdenum is used in the manufacture of ammonia.
(c) Blue solution of copper sulphate changes to green
when a piece of iron is added to this solution.
(d) Colourless concentrated sulphuric acid in a test
tube changes to blue on adding a small piece of
copper to it​

Answer 1

Answer:

) Molybdenum increases the efficiency of the catalyst iron used in the manufacture of ammonia. c) This is because of the blue colour of the copper sulphate solution fades and eventually turns into light green due to the formation of ferrous sulphate.

Explanation:

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