| List-$I$ Element detected | List-$II$ Reagent used/Product formed |
| $A$. Nitrogen | $I$. $Na_2[Fe(CN)_5NO]$ |
| $B$. Sulphur | $II$. $AgNO_3$ |
| $C$. Phosphorus | $III$. $Fe_4[Fe(CN)_6]_3$ |
| $D$. Halogen | $IV$. $(NH_4)_2MoO_4$ |
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| Test | Inference |
|---|---|
| $a$. Dil. $HCl$ | Insoluble |
| $b$. $NaOH$ solution | Soluble |
| $c$. $Br_2/\text{water}$ | Decolourization |
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