A compound (A) is greenish crystalline salt which gave the following results `:`
`i)` Addition of `BaCl_(2)` solution to solution of (A) results in the formation of a white ppt. (B), which is insoluble in dil. HCl.
`ii)` On heating (A), water vapours and two oxides of sulphur, (C ) and (D) are liberated leaving a red brown residue (E).
`iii)` (E) dissolves in warm conc. HCl to give a yellow solution (F).
`iv)` With `H_(2)S`, the solution (F) yields a pale yellow ppt. (G), which when filtered, leaves a greenish filtrate (H).
`v)` Solution (F) on treatment with thiocyanate ions gives blood red coloured compound (I).
Identify the substances from (A) to (I).
Red brown residue (E) produces metal when it is heated with
I) coke`" "`II)`Al_(2)O_(3)`
`III)` metal sulphide of same metal
`IV)` Al metal

Options

A. I,II
B. I,III
C. I,III,IV
D. I,IV

Answer

D

Explanation

`E=Fe_(2)O_(3),F=FeCl_(3)(aq.),G=`Sulphur