

MCQOPTIONS
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1. |
Hydrogen sulfide (H₂S) and ammonia (NH₃) are produced from |
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» D. treatment of acidic wastes with alkalis | |