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(i) Name a compound of (a) transition ...

(i) Name a compound of
(a) transition metal which is used in the manufacture of sulphuric acid.
(b) transition metal that is used in Haber's process for the manufacture of ammonia.
(c ) transition metal that have light sensitive properties and act as valuable source in photographic industry.
(ii) Write the equations which are involved in the oxidation of hydrogen sulphide to sulphur by potassium permanganate solution.

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