What is the formula of urea?
Correct answer: D. CO (NH2)2
- A. None of these
- B. NH2-CO-NH-CO-NH2
- C. (NH4)2CO3
- D. CO (NH2)2
Explanation
Urea is CO(NH₂)₂, also written as NH₂CONH₂, containing one carbonyl group bonded to two amino groups. The other formulas represent different nitrogen compounds.
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