Related Questions
At STP, the molar volume of any ideal gas is approximately:
11.2 L
22.4 L
44.8 L
1 L
How many molecules are present in 22.4 L of an ideal gas at STP?
3.011 x 10²³
6.022 x 10²³
1.204 x 10²⁴
2.408 x 10²⁴
What are flocs?
Masses of anaerobic bacteria
Masses of aerobic fungi only
Masses of anaerobic bacteria, fungi
Masses of aerobic bacteria associated with fungi filaments
Physical removal of large and small stable solid particles from the sewage through filtration and sedimentation is called
Primary treatment
Secondary treatment
Tertiary treatment
Quaternary treatment
Primary treatment is the
Physical removal of large and small particles from sewage
Biological removal of large and small particles from sewage
Both (1) and (2)
Chemical removal of large and small particles from sewage
Select the correct statement from the following
Activated sludge sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
Biogas is produced by the activity of aerobic bacteria on animal wastes
Methanobacterium is an aerobic bacterium found in rumen of cattle
Biogas, commonly called gobar gas is pure methane
BOD may not be a good index for pollution for water bodies receiving effluents from?
Petroleum industry
Sugar industry
Domestic
Dairy industry
Waste water treatment generates a large quantity of sludge, which can be treated by
Anaerobic sludge digesters
Activated sludge
Chemicals
If the density of a gas at STP is , what is its molar mass?
22.4 g/mol
44.0 g/mol
88.0 g/mol
11.2 g/mol
During the primary treatment of sewage, solid particles that settle down are called
Activated sludge
Secondary sludge
Primary sludge
Anaerobic sludge
