Greater the BOD more is the polluting potential. Actually, in secondary treatment or biological treatment of sewage water in plant, the primary effluent is passed into large aeration tanks where it is constantly agitated mechanically and air is pumped into it. This allows vigorous growth of useful aerobic microbes into flocs (masses of bacteria associated with fungal filaments to form mesh like structures).
While growing, these microbes consume the major part of the organic matter in the effluent. This significantly reduces the BOD (Biochemical Oxygen Demand) of the effluent. BOD refers to the amount of the oxygen that would be consumed if all the organic matter in one litre of water were oxidized by bacteria. The sewage water is treated
till the BOD is reduced.
Q-Consider the following statements:
Kyoto Protocol was adopted in 1997 to fight global warming by reducing Greenhouse Gases emission.
The 2nd commitment period of Kyoto protocol is for the period 2015-2022 and was adopted by the Doha Amendment in 2013.
Both developed and Developing countries have mandatory mitigation obligations under the Kyoto Protocol.
Select the In-correct answer using the code given below:
Bio-magnification increases concentration of toxins with increase in trophic level it has no role in increase in total biomass.
Q-Consider the following Flexible Mechanisms of Kyoto Protocol:
Through Clean Development Mechanism (CDM), any Annex I country can invest in emission reduction projects in any other Annex I country as an alternative to reducing emission domestically.
Through joint implementation (JI), countries can meet their domestic emission reduction targets by buying greenhouse gas reduction units from (projects in) non-Annex I countries to the Kyoto Protocol (Most developing countries).
Select the correct answer using the code given below: A- Only 1 B- Only 2 C- Both are Correct D- None of the Above
JIM (Joint Implementation Mechanism) is identical to CDM (Clean Development Mechanism) but is case of CDM a developed country can set a project only in developing countries whereas in Joint Implementation Mechanism any signatory developed country can set a project in developed country whether it is signatory to Kyoto Protocol or not.
Q- Which of the following effect of green house gases (GHGs) on the oceans?
The capacity of the sea shells to produce their carbonate crusts is depleting due to increased acidity of the sea water.
Warmer oceans inhibit the growth of phytoplankton and algae which are at the foundation of the oceanic food chain and the oxygen producing engine of the planet.
Changes in the migration patterns of heat tolerant and heat intolerant creatures shall alter predatory pattern across the oceans creating a crisis for food for prey and the unadoptable ones.
Erratic and fast warming of the oceans can alter the patterns of oceanic currents which are so vital for global climates and sustenance of aquatic ecosystem in their role as conduits of nutrition.
03 November 2018 Daily MCQ Based on Current Affair Q-Sometimes often seen a term of A rainy day or rainy day fund ..what its mean ? 1-A rainy day or rainy day fund is a reserved amount of money to be used in times when regular income is disrupted or decreased in order for typical […]
28th Novermber 2018 Daily MCQ Based on Current Affair Q-Consider the following statements 1-13th G-20 Summit hosted by Argentina. 2-The G-20 seeks to promote multi-faceted cooperation among the twenty largest economies of the world. Select the correct answer using the code given below: A-Only 1 B- Only 2 C- Both are Correct D- None […]
19th October Daily MCQ with answer Consider the following statements 1-National Disaster Management Authority (NDMA) is apex Non- Statutory body for disaster management in India 2-It is under control of Prime Minister office & provisions are envisaged in Disaster Management Act, 2005 3-It is headed by the Prime Minister of India. Select the correct […]