Hamad Chemical Environmental Engineering 20/09/2021 A. Acetylene B. Petrol vapor C. Hydrogen D. Carbon monoxide Related Mcqs: Which of the following fine dust removal equipments is the most efficient ?A. Bag filter B. Scrubber C. Electrostatic precipitator D. Cyclone separator... The pH value of potable water should be between____________________?A. 1 to 1.5 B. 6.5 to 8 C. 13 to 14 D. 4 to 5... The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the __________________?A. Bacterial stability factor B. Relative stability C. Biological oxygen demand (BOD) D. Oxygen ion concentration... Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N2 in contaminated air at which it acts as a natural asphyxiate is ≥ _____________ percent?A. 84 B. 88 C. 80 D. 92... Ozone is__________________?A. A primary pollutant B. A secondary pollutant C. Impervious to ultra-violet rays D. Both B. and C....
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