A) Formaldehyde
B) Acetaldehyde
C) Acetone
D) Benzaldehyde
Correct Answer: A
Solution :
Formaldehyde on heating with ammonia to give urotropin. The chemical name of urotropin is hexa methylene tetra amine. \[6HCHO+4N{{H}_{3}}\xrightarrow{{}}\underset{urotropin}{\mathop{{{(C{{H}_{2}})}_{6}}{{N}_{4}}}}\,+6{{H}_{2}}O\]
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