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Question
Identify the cations in the following case:
NaOH solution, when added to the Solution (A), gives a reddish brown precipitate
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Solution
Fe3+ ion
FeCl3 + 3NaOH 
Fe(OH)3 + 3NaCl
(Reddish brown ppt.)
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| Aqueous salt solution | Colour of precipitate when NaOH is added in a small quantity | Nature of precipitate (soluble or insoluble) when NaOH is added in excess |
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| Zinc nitrate | (ii) | (vii) |
| Lead nitrate | (iii) | (viii) |
| Calcium chloride | (iv) | (ix) |
| Iron (III) Sulphate | (v) | (x) |
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