A) N-Methyl urea
B) Ammonia
C) Formaldehyde
D) Methylamine
Correct Answer: C
Solution :
\[\underset{\downarrow }{\mathop{\overset{Urea}{\mathop{{{H}_{2}}N}}\,-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,N{{H}_{2}}+\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\overset{Formaldehyde}{\mathop{H-C-H}}}\,}}\,\] \[\underset{Urea\,formaldehyde\,re\sin }{\mathop{-{{[NH-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-NH-C{{H}_{2}}]}_{n}}-}}\,\]
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