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A pale green crystalline metal salt of M...

A pale green crystalline metal salt of M dissolves freely in water. It gives a brown precipitate on addition of aqueous NaOH. The metal salt solution also gtives a black precipitate on bubbling `H_2 S` in aqueous medium. An aqueous solution of the metal salt decolourizes the pink colour of the premanganate solution. The metal in the metal salt solution is

A

Copper

B

aluminium

C

lead nitrate

D

Iron

Text Solution

Verified by Experts

The correct Answer is:
D
`FeCl_(2)+"aq."NaOH"rarrunderset(FeOyellow) underset( darr air) (Fe(OH)_(2)(green))`
`FeO+MnO_(4)^(-)rarrFe_(2)O_(3)+Mn^(+2)`
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