1.

A student was given a sample of colourless solution contaning three cations and was asked to identify the cations: student carried out a series of reactions as given below. Which of the following statement is correct?

Answer»

Precipitate C gives Rinmann's green test.
Precipitate B is appreciably soluble in boiling CONCENTRATED `H_(2)SO_(4)`
Precipitate A on exposure to SUNLIGHT or ultraviolet radiations TURNS black
All of the above

Solution :`A rarr AgCI, B rarr BaSO_(4), C rarr Zn(OH)_(2)`
`A rarr` Insoluble in `HCI`,
`BaSO_(4)darr +H_(2)SO_(2) ("CONC") rarr Ba^(2+) +2HSO_(4)^(-)`


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