A few drops of concentrated HNO\(_3\) is added to an unkn...
A few drops of concentrated HNO\(_3\) is added to an unknown solution and boiled for a while. If this produces a brown solution, the cation present is likely to be
Pb2+
Cu2+
Fe3+
Fe2+
Correct answer is C
The brown color indicates the presence of iron (III) (Fe\(^{3+}\)).
What is the atomic number of Gold? ...
Which of the following compound is used for removing impurities from bauxite? ...
Which of the following salt solutions will have a pH greater than 7? ...
During water treatment for town supply, water is passed through layers of send beds in order to ...