Chemistry
From the list of substances given — Ammonium sulphate, Lead carbonate, Chlorine, Copper nitrate, Ferrous sulphate — State : A substance that turns moist starch iodide paper blue.
Practical Chemistry
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Answer
Chlorine
Cl2 + 2KI ⟶ 2KCl + I2
[Starch + I2 ⟶ blue black colour]
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