JEE · NEET Previous Year Question

Formation of which complex, among the following, is not a confirmatory test of ions

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

  1. ALead sulphate
  2. BLead nitrate
  3. CLead chromate
  4. DLead iodide

Correct answer: B

Solution

(b)On adding to , white precipitate of lead sulphate, is formed. By adding potassium iodide solution to - Yellow precipitate of lead iodide is formed. The ppt dissolves in boiling water and on cooling recrystallises.
By adding potassium chromate solution to -Yellow precipitate of lead chromate is formed. But lead nitrate is a water soluble compound.

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