Chemistry - Salt Analysis Question with Solution | TestHub

Based on the chemical tests provided in the diagram, salt (A) is NaCl (Option A). The "yellowish green gas" (B) is Cl₂, produced by the oxidation of chloride ions by MnO₂ in an acidic medium. The "brown vap" (C) is CrO₂Cl₂ (Chromyl Chloride), characteristic of the Chromyl Chloride Test for chlorides. This vapor reacts with NaOH to form Na₂CrO₄ (Sodium Chromate), which is the "yellow solution" (D).