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JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS
1
Medium
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Analyzing
+4 | -1
When a certain compound (used in laboratory for analysis) is added to copper sulphate solution a yellow-brown precipitate is obtained which turns white on addition of excess of solution.On addition to ion solution, a yellow curdy precipitate is obtained which is insoluble in . The is
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Correct option: C
Option C (KI) is correct because KI reacts with copper sulfate to form a yellow-brown precipitate that turns white with excess Na2S2O3, and it forms a yellow curdy precipitate with Ag+ that is insoluble in NH4OH.
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