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MEDIUMMCQ SINGLEJEE Advanced ChemistryInorganic Chemistryp -Block Elements (group 15-18)Previous Year Questions

Urea reacts with water to form A which will decomposes to form B. B when passed through Cu²⁺ (aq), deep blue color solution C is formed. What is the formula of C from the following. (NEET 2020)

A.Cu(OH)₂
B.CuCO₃. Cu(OH)₂
C.CuSO₄
D.[Cu(NH₃)₄]+2✓ Correct
Explanation

(Ammonium Ammonia Hydroxide) (deepblue colorsolution ) A 2 2 2 2 2 3 2 decompose (Urea) (A) (B) 2 2 3 3 4 (C) NH CONH H O NH OH CO NH H O 4NH Cu (aq.) [Cu(NH ) ] → → →

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