A rainfall is considered acid rain if the pH of rainwater is
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31%
(a) less that 7.0
43%
(b) less than 5.6
19%
(c) less that 4.5
6%
(d) less than 3.0
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An isochrones is a line of the basin map
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12%
(a) joining rain gauge stations having equal rainfall duration
34%
(b) joining points having equal rainfall depth in a given time interval
51%
(c) joining points having equal time of travel of surface runoff to the catchments outlet
3%
(d) joining points which are at equal distance from the catchments outlet
Which of the following air pollutants causes irritation of the eye?
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26%
(a) Photo-chemical oxidants
14%
(b) ozone
35%
(c) carbon monoxide
25%
(d) sulphur oxides
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PYQs_Surveying For Class 3.pdf
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🛑Exam Date out for Advt No. 215. Planning Assistant & Advt No. 213Surveyor
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🛑Exam Date out for Advt No. 215. Planning Assistant & Advt No. 213 Surveyor
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The most accurate method of finding the average depth of rainfall over an area is-
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52%
(a) Isohyetal method
12%
(b) Arithmetic mean method
18%
(c) Thiessen polygon method
17%
(d) All of these
👍3
Orographic precipitation occurs due to air masses lifted to higher altitudes by
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19%
(a) The density differences of air masses
13%
(b) A frontal action
65%
(c) The presence of mountain barriers
3%
(d) Extra tropical cyclones
👍3👌1
In an area, if storms appear in every 10 years and the duration of each storm is 361 min, then the intensity of rainfall (mm/h) will be approximately given by
Anonymous Quiz
13%
(a) 15
44%
(b) 20
30%
(c) 25
13%
(d) 30
During temperature inversion in atmosphere air pollutants tends to
Anonymous Quiz
26%
(a) Accumulate above inversion layer
56%
(b) Accumulate below inversion layer
12%
(c) Disperse laterally
6%
(d) Disperse vertically
👌1
Electrostatic precipitator is a device to control
Anonymous Quiz
5%
(a) SO2 emission
23%
(b) Particulate emission
58%
(c) Both SO2 and particulate emission
14%
(d) Precipitation of Al (OH)3 in water coagulation
A rainfall with an intensity of 5 mm/h is classified as
Anonymous Quiz
4%
(a) Trace
30%
(b) Light rain
60%
(c) Moderate rain
7%
(d) Heavy rain
👍1
Cyclonic precipitation is caused by lifting of an air mass due to
Anonymous Quiz
59%
(a) Pressure difference
21%
(b) Temperature difference
19%
(c) Natural topographical barriers
1%
(d) None of these
Solid waste treatment by pyrolysis refers to
Anonymous Quiz
27%
(a) Treating with chemicals before heating
9%
(b) No heating
28%
(c) Heating in presence of air
36%
(d) Heating in absence of air
In air pollution, PAN is:
Anonymous Quiz
10%
(a) peroxy acetyl nitride
28%
(b) peroxy acetyl nitrite
59%
(c) peroxy acetyl nitrate
3%
(d) None of the above
👍1👌1🏆1
The maximum damage to the Taj Mahal is because of the gas
Anonymous Quiz
19%
(a) CO2
12%
(b) CO
33%
(c) SO2
36%
(d) All of the above
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