ICSE Class 10 Chemistry 2023 Solved Paper

SECTION - I

Choose the correct answers to the questions from the given options.

Question : 6

Total: 88

The metallic hydroxide which forms a deep inky blue solution with excess ammonium hydroxide solution is :

Solution:

(b) Ca(OH)2
Explanation:
CuSO4+2NH4‌OH→(NH4)2SO4 +Cu(OH)2
Cu(OH)2+(NH4)2SO4+NH4‌OH→[Cu(NH3)4]SO4 +4H2O

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