A compound is soluble in water. If ammonia is added, a red precipitate appears which is soluble in dilute HCl. The compound has

Options

A. Aluminium
B. Zinc
C. Iron
D. Cadmium

Answer

C

Explanation

`FeCl_(3) + 3NH_(4)OH to Fe underset("(red)")((OH))_(3) + 3NH_(4)Cl`
`2Fe(OH) + 6HCl to underset("(Soluble in HCl)")(2FeCl_(3)) + 6H_(2)O`