1.

Impurity along SO_(2) is __ and it is removed by

Answer»

`As_(2)O_(3),Fe_(2)O_(3),xH_(2)O`
`H_(2)S,Al(OH)_(3)`
`H_(2)S,Fe_(2)O_(3),xH_(2)O`
`AS_(2)O_(3),Al_(2)O_(3),xH_(2)O`

ANSWER :A


Discussion

No Comment Found