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Environmental Studies Questions and Answers for Competitive Exams | Environmental Studies Quiz Set 11

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Free Download as PDF Environmental Studies Quiz Questions and Answers for Competitive Exams or solved MCQs with answers. These quiz objective questions are helpful for competitive exams SSC, UPSC, IAS, IPS, CDS, NDA, Railways or RRB, psc exams of Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Gujarat, Haryana, Himachal Pradesh, Jammu & Kashmir, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Orissa, Punjab, Rajasthan, Sikkim, Tamil Nadu, Tripura, Uttar Pradesh, West Bengal, Chhattisgarh, Uttarakhand, Jharkhand, Telangana etc.
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(1) If D = Detector Dimension, F = Focal Length, H = Flying Height, then Ground Resolution Element (GRE) is equal to
(1) (D/F) H
(2) D/F
(3) H/F
(4) D/H
Answer: (D/F) H
(2) Darkest level of the associated color (RGB) would have brightness value equal to
(1) 0
(2) 256
(3) 255
(4) 2047
Answer: 0

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(3) Scale lengths associated with synoptic scale phenomenon in atmosphere are typically in the range
(1) 10 – 100 km
(2) 200 – 40,000 km
(3) 10,000 – 100,000 km
(4) 1 – 10 km
Answer: 200 – 40,000 km
(4) Assume that the atmosphere is isothermal at 25 C and the estimated maximum daily surface temperature is 35 C, the mixing height is (take adiabatic lapse rate to be 1 C per 100 m)
(1) 3.5 km
(2) 2.5 km
(3) 1.5 km
(4) 1 km
Answer: 1 km
(5) The wavelengths of UV-A radiations are in the range
(1) 200 – 240 nm
(2) 240 – 280 nm
(3) 280 – 320 nm
(4) 320 – 400 nm
Answer: 320 – 400 nm
(6) Two sounds of 80 dB and 85 dB superimpose at a location. What is the resultant sound at that location ?
(1) ~ 82 dB
(2) ~ 87 dB
(3) ~ 91 dB
(4) ~ 165 dB
Answer: ~ 82 dB
(7) The coefficient of performance of a wind turbine for maximum power output is
(1) 13/18
(2) 5/8
(3) 16/27
(4) 11/17
Answer: 16/27
(8) Which of the following does not have a direct role in climate change ?
(1) Sulphate and nitrate aerosols
(2) Black carbon aerosols
(3) Surface ozone
(4) Nitric oxide
Answer: Nitric oxide
(9) Which method is used to separate molecules on the basis of their sizes ?
(1) Ion exchange chromatography
(2) Molecular exclusion chromatography
(3) Adsorption chromatography
(4) Thin layer chromatography
Answer: Molecular exclusion chromatography
(10) Which type of support media is used in different types of electrophoresis?
(1) Agarose gel
(2) Polyacrylamide gel
(3) Sodium dedecyl sulphate polyacrylamide gel
(4) All the above
Answer: All the above
(11) Which of the following categories of plants get benefitted more due to elevation of CO2 level ?
(1) C3 plants
(2) C4 plants
(3) CAM plants
(4) All of the above
Answer: C3 plants
(12) Aquifers that extend continuously from the land surface through material of high permeability are
(1) Aquitards
(2) Auicludes
(3) Confined aquifers
(4) Unconfined aquifers
Answer: Unconfined aquifers
(13) Which one of the following is used to determine ambient concentration of suspended particulate matter ?
(1) Cascade impactor
(2) Kjeldahl’s Flask
(3) Sacchi Disk
(4) Folin-Wu method
Answer: Cascade impactor
(14) Which of the following laws states that the solubility of a gas in a liquid is proportional to the partial pressure of that gas in contact with liquid ?
(1) Hick’s law
(2) Henry’s law
(3) Hardy-Weinburglaw of equilibrium
(4) 2nd Law of Newton
Answer: Henry’s law
(15) Maximum CaO is found in
(1) Bauxite
(2) Limonite
(3) Lime Stone
(4) Siderite
Answer: Lime Stone

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