Related Questions

The sewage treatment units in which anaerobic decomposition of organic matter is used, are called
A Imhoff tanks
B Trickling filters
C Sludge sedimentation tanks
D None of these
The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known
A Bio-Chemical Oxygen Demand (B.O.D.)
B Dissolved Oxygen (D.O.)
C Chemical Oxygen Demand (C.O.D.)
D None of these
The biological decomposition of organic substances in wastes controlled conditions is called
A Incineration
B Biological oxidation
C Composting
D None of these
Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in
A Coagulation and flocculation of colloids
B Oxidation of carbonaceous matter to CO2
C Nitrification or oxidation of ammonia derived from breakdown of nitrogeneous organic matter to the nitrite and eventually to the nitrate
D All of the above
Break even point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost
A Only
B Plus variable cost
C Plus overhead cost
D Plus selling expenses
Under the ideal environmental conditions bacterial cells divide at the rate of division per twenty
A Second
B Minutes
C Hours
D Days
Anaerobic glycolysis produces
A ATP
B NAD
C Lactic acid
D Acetoacetic acid
E NADP
Anaerobic glycolysis is a valuable source of energy for
A Skeletal muscle during exercise
B RBC
C Leucocytes
D Cardiac muscle
E Smooth muscle
Anaerobic glycolysis
A Occurs in cells without mitochondria
B Produces ATP
C Produces lactate
D Is not important for RBC Produces lactate
E Produces NADPH
Anaerobic bacteria are
A Propionibacterium
B Clostridium
C Bacteroides
D Pseudomonas
E Acinetobacter

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