When an orange coloured crystallccompound [A] was heated withcommon sa – InterviewSolution

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1.	When an orange coloured crystallccompound [A] was heated withcommon salt and concentrated sulphuricacid , an orange red colouredgas [B] wasevolved. The gas [B] on passingthrough NaOH solution gave a yellow solution [C] . Thesolutionon reactingwith an aqueous solution of lead acetate gave a yellow precipitate. The crystalline compound [A] is:
Answer» COBALT nitrate manganese sulphate Potassium dichromate. Ammonium dichromate. Solution :(c) The available information SUGGESTS that the orange coloured compound is `K_(2)Cr_(2)O_(7)`.

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