A) Fe
B) Sn
C) Pb
D) Zn
E) Al
Correct Answer: A
Solution :
Iron (Fe) metal in solution forms a red brown precipitate with \[NaOH\]and this precipitate is not soluble in an excess of the base. \[FeC{{l}_{3}}+3NaOH\xrightarrow{{}}\underset{\begin{smallmatrix} \text{ferric}\,\,\text{hydroxide} \\ (red\,\,brown\,\,ppt.) \end{smallmatrix}}{\mathop{Fe{{(OH)}_{3}}}}\,+3NaCl\] While the precipitate of Sn, Pb, Zn and all hydroxides are soluble in the excess of base.You need to login to perform this action.
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