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Environmental Studies Questions and Answers for Competitive Exams | Environmental Studies Quiz Set 18

Questions
1 Integrated Gasification Combined Cycle (IGCC) technology is best at removing
1 NO2 and CO
2 CO and SO2
3 Particulates and sulphur
4 NO2 and SO2

Answer: Particulates and sulphur
2 A wastewater treatment plant in a city treats 50,000 m3 wastewater generated per day. For an average flow rate of 25 m3 per day per sq. metre, what should be the diameter of the circular primary settling tank ?
1 50.4 m
2 30.6 m
3 20 m
4 25.8 m

Answer: 50.4 m
3 An Electrostatic Precipitator (ESP) with collector plate area = 5000 m2 treats a flue gas with drift velocity = 0.12 m/s with 98% efficiency. The volumetric flow rate (m3/s) of the flue gas is
1 ~ 175.2
2 ~ 213.5
3 ~ 153.4
4 ~ 198.9

Answer: ~ 153.4
4 A drawback of checklists is
1 Preliminary analysis is available in scaling checklist
2 Checklists are too general or incomplete
3 Checklistssummarises information to make it available to experts
4 Ecosystem functions can be clearly understood from weighting methods

Answer: Checklists are too general or incomplete
5 Risk assessment in EIA does not involve
1 Maximum credible analysis
2 Hazard and operability studies
3 Preparation of disaster management plan
4 Assessment of economic benefit arising out of a project

Answer: Assessment of economic benefit arising out of a project
6 In a gravity flow autoclave, medical waste is subjected to a temperature
1 > 120 °C
2 < 100 °C
3 > 300 °C
4 > 800 °C

Answer: > 120 °C
7 Hierarchy of priorities in hazardous waste management is
1 Eliminate generation Reduce generation → Recycle /Reuse → Treatment →Disposal
2 Reduce generation Eliminate generation →Recycle/Reuse → Treatment→ Disposal
3 Eliminate generation →Reduce generation → Treatment → Recycle/Reuse→ Disposal
4 Reduce generation- Eliminate generation → Treatment → Recycle/Reuse→ Disposal

Answer: Eliminate generation Reduce generation → Recycle /Reuse → Treatment →Disposal
8 Public Liability Insurance Act was enacted in the year
1 1991
2 1993
3 1995
4 1997

Answer: 1991
9 The Pearson Linear correlation coefficient (r) for the following paired data (x, y) : (2, 1.4) (4, 1.8), (8, 2.1), (8, 2.3), (9, 2.6) is
1 0.623
2 – 0.572
3 0.957
4 0.823

Answer: 0.957
10 In a rough terrain the wind speed at a height of 10 m is 2.5 m/s. The wind speed at an elevation of 300 m will be
1 4.9 m/s
2 1.2 m/s
3 3.6 m/s
4 7.9 m/s

Answer: 4.9 m/s
11 In the context of REDD+ initiatives the land clearing in forest areas is primarily concerned with
1 Physical resources of the area
2 Ecology of the area
3 Carbon budget of the area
4 Water resources of the area

Answer: Carbon budget of the area
12 Global Warming Potential (GWP) of a greenhouse gas (GHG) is a comparison of global warming impact between
1 1 kg of GHG and 1 kg of methane
2 1 kg of GHG and 1 kg of CO2
3 1 kg of GHG and 1 kg of N2O
4 1 kg of GHG and 1 kg of CFC-11

Answer: 1 kg of GHG and 1 kg of CO2
13 Environmental ethics deal with moral relationship of human beings to
1 the value and moral status of the environment and its non-human contents
2 the values that are important to development and economic growth
3 the conservation values of selected species
4 the development of genetically modified organisms

Answer: the value and moral status of the environment and its non-human contents
14 The major source of BaP (Benzo-a- pyrene) in atmospheric environment is
1 residential wood burning
2 gasoline
3 coal tar
4 cooked meat

Answer: residential wood burning
15 Which of the following mixture of gases is called biogas ?
1 CO2, CH4, NH3, H2S, H2O(vapour
2 CO, CH4, NH3, H2S, H2O(vapour)
3 CO2, CH4, N2O, NH3, H2O(vapour)
4 CO2, NOx, H2O, CH4

Answer: CO2, CH4, NH3, H2S, H2O(vapour)

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