A white amorphous A on heating yields a colourless, non-combustible gas B a solid C .The lattercompound assumes a yellow colour on heating and changes towhite on cooling C dissolvein dilute hydrochloric acid and theresulting solutiongives a white precipitate with K_(4)Fe(CN)_(6) solution .A dissolve in dilute HCI withtheevolutionof gas , which is identicalin all respect B turnslime milky , but the milkinessdisuppearswith the contimous passage of gassolutionof A asobtained abovegives a white precipitate D on the additionof excess of NH_(4)OH and passing H_(2)S anotherportionof the solutiongivesinitialya whiteprecipitateE on theadditionof NaOHsolution , whichdissolves on furtheradditionof base , identifythecompounds A,B,C,D and E

A white amorphous A on heating yields a colourless, non-combustible ga

1.	A white amorphous A on heating yields a colourless, non-combustible gas B a solid C .The lattercompound assumes a yellow colour on heating and changes towhite on cooling C dissolvein dilute hydrochloric acid and theresulting solutiongives a white precipitate with K_(4)Fe(CN)_(6) solution .A dissolve in dilute HCI withtheevolutionof gas , which is identicalin all respect B turnslime milky , but the milkinessdisuppearswith the contimous passage of gassolutionof A asobtained abovegives a white precipitate D on the additionof excess of NH_(4)OH and passing H_(2)S anotherportionof the solutiongivesinitialya whiteprecipitateE on theadditionof NaOHsolution , whichdissolves on furtheradditionof base , identifythecompounds A,B,C,D and E
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