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Into iron pyrites in water, air was bubb...

Into iron pyrites in water, air was bubbled for a long time. Green crystal (A) and another substance (B) were produced. 'A' in solution was treated with conc. `HNO_(3)` and B. The solution was evaporated and crystallized, pale yellow crystals of 'C' was produced .
The reagent that gives red color with a solution of C is

A

`NH_(4)CNO`

B

`NH_(4)SCN`

C

`K_(4)[Fe(CN)_(6)]`

D

`K_(3)[Fe(CN)_(6)]`

Text Solution

Verified by Experts

The correct Answer is:
B
`Fe^(3+)` gives blood red color with `NH_(4)SCN`
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