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Question
Hydrogen sulfide (H₂S) and ammonia (NH₃) are produced from
Options:
A .  the chimneys of factories
B .  use of chlorofluorocarbon in foam packaging
C .  decomposition of organic compounds by anaerobic bacteria
D .  treatment of acidic wastes with alkalis
Answer: Option C
Answer: (c).decomposition of organic compounds by anaerobic bacteria

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