1.

Milk of sulphur is obtained by

Answer»

passing `H_(2)S` through `HNO_(3)`
the reaction of `Na_(2)S_(2)O_(3)" with "HCl`
MELTING sulphur in a dish
boiling MILK of lime with sulphur and then with HCl.

Solution :Milk of lime is boiled with sulphur and then calcium penta sulphide so-formed is decomposed with HCl to get white amorphous PRECIPITATE of sulphur.
`underset(("Milk of lime"))(3Ca(OH)_(2))+12S to underset(("Milk of sulphur"))(2CaS_(5)+CaS_(2)O_(3)+3H_(2)O)`


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