BOD of waste water is estimated by measuring the amount of
total organic matter
biodegradable organic matter
oxygen evolution
oxygen consumption
Which one of the following alcoholic drinks is produced without distillation?
Wine
Whisky
Rum
Brandy
The technology of biogas production from cow dung was developed in India largely due to the efforts of
Gas Authority of India
Oil and Natural Gas Commission
Indian Agricultural Research Institute, Khadi and Village Industries Commission
Indian Oil Corporation
The free-livings fungus Trichoderma can be used for
killing insects
biological control of plant diseases
controlling butterfly caterpillars
producing antibiotics
What would happen if oxygen availability to activated sludge flocs is reduced?
I will slow down the rate of degradation of organic matter
The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs
Flocs would increase in size as anaerobic bacterial would grow around flocs
Protozoa would grow in large numbers