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  4. Urotropine is obtained by the reaction of NH3 with

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Q. Urotropine is obtained by the reaction of $ NH_{3} $ with

Uttarkhand PMTUttarkhand PMT 2010

Solution:

Formaldehyde $(HCHO)$ reacts with ammonia to form hexamethylene tetramine,
$(CH_2)_6N_4$
which is known as urotrppine.
$ \underset{\text{formaldehyde}}{6HCHO}\,+4NH_{3}\rightarrow \underset{\text{urotropine}}{(CH_{2})_{6}N_{4}}\,+6H_{2}O $
Urotropine is used as a medicine to treat urinary infections.