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.
Good ozone is found in the
mesosphere
troposphere
stratosphere
stratosphere
C.
stratosphere
The stratosphere is the second major layer of earth's atmosphere, just above the troposphere and below the mesosphere. It is the layer of ozone (O3). The ozone absorb high-energy UV-B and UV-C energy waves and breakdown into atomic Oxygen (O) and diatomic oxygen (O2).
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
C.
IUCN = International Union for Conservation of Nature and Natural Resources
IUCN OR IUCNNR (International Union for Conservation of Nature and Natural Resources) is now known as WCU (World Conservation Union). Its headquarters are at Morges, Switzerland. It studies the threat to biodiversity in all parts of the world by gathering information about the geographical distribution, population size and population changes of various taxa. It prepares a red list or red data book.
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
B.
Radioactive fallout engulfed Bhopal
Bhopal gas Tragedy (Bhopal disaster) the world's worst industrial catastrophes. It occurred on the night of December 2/3, 1984 at the Union Carbide India Limited (UCIL) pesticide plant in Bhopal, Madhya Pradesh. A leak of methyl isocyanate gas and other chemicals from the plant resulted in the exposure of hundreds of thousands of people. The official immediate death toll was 2,259 and the government of Madhya Pradesh has confirmed a total of 3,787 deaths related to the gas release. A government affidavit in 2006 stated the leak caused 5, 58125 injuries.
Eutrophication is often seen in
fresh water lakes
Ocean
Mountains
Mountains
B.
Ocean
Eutrophication is a nutrient enrichment of water body resulting in increased growth of algae, other plants and animals. It is often seen is fresh water lakes. Actually, it is the natural ageing of a lake by biological enrichment of its water.