Hamad Chemical Environmental Engineering 11/09/2021A. Bacterial stability factor B. Relative stability C. Biological oxygen demand (BOD) D. Oxygen ion concentrationRelated Mcqs:The upper layer of atmosphere is called the ____________________?A. Stratosphere B. Troposphere C. Ionosphere D. None of these...Threshold limit value (TLV) of CO in air is _____________ ppm?A. 5 B. 50 C. 2000 D. 5000...Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by__________________?A. Biological oxygen pond B. Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) C. Lagoons D. Filtration...TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?A. 0.1 B. 25 C. 100 D. 1000...Which of the following processes is involved in the biochemical treatment of sewage effluents ?A. Oxidation B. Reduction C. Dehydration D. Fermentation...
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