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A colorless inorganic compound impart a green color to flame. It’s solution gives white precipitate with `H_2SO_4`, when it is heated with `K_2Cr_2O_7` and coc `H_2SO_4` a red vapour is evolved. The oxidation nuber of metal in red vapour is :

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`K_(2)Cr_(2)O_(7)+H_(2)SO_(4)+BaCl_(2) to CrO_(2)Cl_(2)`.
red vapour: Oxidation state of Cr in `CrO_(2)Cl_(2)=+6`.
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A colourless inorganic compound (A) imparts a green colour to the flame. Its solution gives a white ppt. (B) with H_(2)SO_(4) . When heated with K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) , a brown red vapour/gas (C) is formed. The gas/ vapour when passed through aqueous NaOH solution, it turns into a yellow solution (D) which forms yellow precipitate (E) with CH_(3)COOH and (CH_(3)COO)_(2)Pb . with reference to above information, answe the following questions. Q. The colourless inorganic compound (A) is:

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Aniline when treated with K_2 Cr_2 O_7 in conc H_2 SO_4 gives :

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VMC MODULES ENGLISH-JEE MAIN REVISION TEST - 29 (2020)-CHEMISTRY
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