Environmental Studies Questions and Answers - Set 11 | Environmental Science Quiz GkSeries

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

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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

View Answer

Answer: 0

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

View Answer

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

View Answer

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

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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

View Answer

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

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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

View Answer

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

View Answer

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

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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

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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

View Answer

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

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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

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