Select the correct statement from the following
Bio-gas is produced by the activity of aerobic bacteria on animal waste
Methanobacterium is an aerobic bacterium found in rumen of cattle
Biogas, commonly called gobar gas, is pure methane
Biogas, commonly called gobar gas, is pure methane
C.
Biogas, commonly called gobar gas, is pure methane
Activated sludge is a process dealing with the treatment of sewage and industrial waste waters. Atmospheric air on pure oxygen is introduced to a mixture of primary treated or screened sewage (or industrial waster water) combined with organisms to develop a biological flock, which reduces the organic content of the sewage. Sediment is settlement tanks of sewage treatment plant is a rich source of aerobic bacteria because small amounts are used as inoculum in secondary treatment of biological treatment stage of sewage treatment.
Which one of the following expanded forms of the followings acronyms is correct?
UNEP = United Nations Environmental Policy
EPA = Environmental Pollution Agency
IUCN = International Union for Conservation of Nature and Natural Resources
IUCN = International Union for Conservation of Nature and Natural Resources
Which one of the following statements in wrong in case Bhopal gas tragedy?
Thousands of human beings died
Radioactive fallout engulfed Bhopal
It took place on the night of December 2/3, 1984
It took place on the night of December 2/3, 1984
Eutrophication is often seen in
fresh water lakes
Ocean
Mountains
Mountains
Good ozone is found in the
mesosphere
troposphere
stratosphere
stratosphere