When an orange coloured crystallc compound [A] was heated with common salt and concentrated sulphuric acid , an orange red coloured gas [B] was evolve
When an orange coloured crystallc compound [A] was heated with common salt and concentrated sulphuric acid , an orange red coloured gas [B] was evolved. The gas [B] on passing through NaOH solution gave a yellow solution [C] . The solution on reacting with an aqueous solution of lead acetate gave a yellow precipitate.
The crystalline compound [A] is:
A. Cobalt nitrate
B. manganese sulphate
C. Potassium dichromate.
D. Ammonium dichromate.
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Correct Answer - C
(c) The available information suggests that the orange coloured compound is `K_(2)Cr_(2)O_(7)`.
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