When Iron is put into acid a gas released which is odor less and when Ironsulphid is put into acid released a gas that gives rotten egg smell this difference in observation conclude that.(Select the appropriate conclusion
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Sulphur-di-oxide gas is evolved. Colourless, gas with smell of burning sulphur. It turns acidified potassium dichromate orange to green.
(ii) Hydrogen sulphide gas is evolved. Colourless gas with smell of rotten eggs. It turns lead acetate paper black.
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