Which of the following options is correct?
(P) `HgCI_(2)` can be used for the distinction of `HCO_(3)^(-)` and `CO_(3)^(2-)`
(Q) `Hg_(2)CI_(2)` is insoluble in water.
(S) `SO_(2)` suspension of `Ag_(2)CO_(3)` and `Ag_(2)SO_(3)` both produces `Ag_(2)O` on heating
(S) `SO_(2)` acts as reducing agent when passed through `FeCI_(3)` solution.

Options

A. FFTT
B. TFTT
C. TTFT
D. FTFF

Answer

C

Explanation

`Ag_(2)CO_(3)(aq) overset("Boil")rarr Ag_(2)O darr`
`Ag_(2)SO_(3)(aq) overset("Boil")rarr Ag darr`