Easy MCQ +4 / -1 PYQ · JEE Mains 2021

Which one of the following when dissolved in water gives coloured solution in nitrogen atmosphere?

  1. A CuCl<sub>2</sub> Correct answer
  2. B AgCl
  3. C ZnCl<sub>2</sub>
  4. D Cu<sub>2</sub>Cl<sub>2</sub>

Solution

(a) CuCl<sub>2</sub> + nH<sub>2</sub>O $\to$ Cu$_{(aq.)}^{ + 2}$ (blue colour)<br><br>(b) AgCl + nH<sub>2</sub>O $\to$ Insoluble<br><br>(c) ZnCl<sub>2</sub> + nH<sub>2</sub>O $\to$ Zn$_{(aq.)}^{ + 2}$ Colourless<br><br>(d) Cu<sub>2</sub>Cl<sub>2</sub> + nH<sub>2</sub>O $\to$ Insoluble

About this question

Subject: Chemistry · Chapter: d and f Block Elements · Topic: Properties of Transition Metals

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