Environmental Studies Questions and Answers for Competitive Exams | Environmental Studies Quiz Set 20

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Questions
1 Out of the total fresh water volume of the frozen form constitutes
1 60 %
2 70 %
3 70 %
4 50 %

Answer: 70 %
2 If Q = stream flow, P = precipitation, E evapotranspiration, S = net change in storage and T = net underground transfers, then the basic water balance equation is
1 Q = (P + E) – ( S + T)
2 Q = (P – E) – ( S + T)
3 Q = (P – E) + ( S + T)
4 Q = (P – E) – ( S – T)

Answer: Q = (P – E) + ( S + T)
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3 Particles with a diameter smaller than 0.002 mm are classed as
1 Cobble
2 Pebble
3 Silt
4 Colloids

Answer: Colloids
4 Water storage capacity of which soil is maximum ?
1 Sandy loam
2 Loam
3 Clay loam
4 Heavy clay

Answer: Heavy clay
5 Which among the following is not a hot desert ?
1 Sahara
2 Kalahari
3 Thar
4 Gobi

Answer: Gobi
6 In an ideal MHD power generator, the maximum power P output varies with the velocity (u) of conducting fuel as
1 P max ∝ u
2 P max ∝ u2
3 P max ∝ u3
4 P max ∝ u3/2

Answer: P max ∝ u2
7 Which is the most efficient energy source for producing electricity ?
1 Nuclear power
2 Hydro power
3 Wind power
4 Solar power

Answer: Nuclear power
8 Which of the following types of coal has highest water content ?
1 Anthracite
2 Bituminous coal
3 Lignite
4 Subbituminous coal

Answer: Lignite
9 Energy intensity is the amount of energy
1 consumed per unit gross domestic product
2 produced per year per unit area of the country
3 consumed per year per unit area of the country
4 consumed per year per unit area of the country

Answer: consumed per unit gross domestic product
10 Which is the cleanest fuel for power generation ?
1 Coal
2 Uranium
3 Hydrogen
4 Water

Answer: Hydrogen
11 The mountain that rises a kilometre or more above the surrounding sea floor is called
1 Oceanic island
2 Atoll
3 Seamount
4 Island arc

Answer: Seamount
12 Which form of As is most toxic ?
1 As+3
2 As+2
3 As+6
4 As+4

Answer: As+3
13 Noise climate is represented by
1 L10 – L90
2 Leq
3 L50
4 (L10 – L90)2 / 60

Answer: L10 – L90
14 The classical smog is mainly composed of
1 NOx and smoke particulates
2 O3 and SO2
3 SO2 and NOx
4 SO2 and smoke particulates

Answer: SO2 and smoke particulates
15 “Blue baby syndrome” is caused due to intake of water high in
1 Ammonia
2 Nitrates
3 Sulphates
4 Sulphides

Answer: Nitrates

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