1.

D on long standing turn to yellow then to brown and finally to a precipitate F. D and F are respectively:

Answer»

`Ag_(2)S_(2)O_(3) "(while PPT)", AG"(BLACK ppt.)"`
`Ag_(2)S_(2)O_(3)"(black ppt.)",Ag_(2)S"(white ppt.)"`
`Ag_(2)S"(black ppt.)",Ag_(2)S_(2)O_(3)"(white ppt)"`
`Ag_(2)S_(2)O_(3)"(white ppt.)",Ag_(2)S"(black ppt.)"`

ANSWER :D


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