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Question

Which of the following will dissolve in water and give colour?


A

Cu2Cl2

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B

CuCl2

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C

AgBr

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D

ZnCl2

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Solution

The correct option is B

CuCl2


Explanation for the correct option:

Option (b):

  • CuCl2on reaction with water gives the aqueous solution.
  • It is completely soluble in water and gives pale-blue colour.
  • So, CuCl2dissolves in water and give colour.

Explanation for the incorrect option:

Option (a): Cu2Cl2is only sparingly soluble in water.

Option (c): AgBr is insoluble in water.

Option (d): ZnCl2 gives a precipitate with water.

Final answer:

Hence, option (b) is the correct answer.


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