1.

When sulphur is boiled with Na_(2)SO_(3) a compound 'A' is produced 'A' with AgNO_(3) solution gives unstable white precipitate B, which on standing turns to black C. Compound A, B and C will be respectively:

Answer»

`Na_(2)S_(2)O_(3),Ag_(2)S_(2)O_(3),Ag_(2)S`
`Na_(2)SO_(4),Ag_(2)S_(2)O_(3),Ag_(2)S`
`Na_(2)S_(2)O_(3),Ag_(2)SO_(4),Ag_(2)S`
`Na_(2)S_(2)O_(3),Ag_(2)SO_(4),Ag_(2)S`

ANSWER :A


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