The primary treatment of waste water involves the removal of
dissolved impurities
stable particles
toxic substances
harmful bacteria
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