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JEE Main 202126 AugustMorning Shift
Exam
JEE Main
Year
2021
Date
26 August
Shift
Morning Shift
Subject
Chemistry
Chapter
d and f Block Elements

JEE Main 2021 · 26 August · Morning Shift · Chemistry · d and f Block Elements

Which one of the following when dissolved in water gives coloured...

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

Options

  1. ACu2Cl2{Cu}_{2}{Cl}_{2}
  2. BZnCl2{ZnCl}_{2}
  3. CCuCl2{CuCl}_{2}
  4. DAgClAgCl

Correct answer

C. CuCl2{CuCl}_{2}

Step-by-step solution

CuCl2{CuCl}_{2} dissolve in water & give blue coloured solutions

CuCl2+nH2O→Cu2+(aq){CuCl}_{2} + {nH}_{2}O \to {Cu}^{2 +} ( aq )

AgClAgCl not soluble in water.
Cu2Cl2{Cu}_{2}{Cl}_{2} is not soluble in water.
ZnCl2{ZnCl}_{2} is soluble but colourless.

ZnCl2+nH2O→Zn2+(aq){ZnCl}_{2} + {nH}_{2}O \to {Zn}^{2 +} ( aq )colourless

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