ChemistryNEET 2020

Chemistry question

Urea reacts with water to form A, which decomposes to form B. B, when passed through $C u^{2 +} (aq)$ , forms a deep-blue-coloured solution C. What is the formula of C from the following?

A. $CuS O_{4}$
B. $[Cu (N H_{3})_{4}]^{2 +}$ ✓
C. $Cu (OH)_{2}$
D. $CuC O_{3} \cdot Cu (OH)_{2}$

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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