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Environmental Studies Questions and Answers for Competitive Exams | Environmental Studies Quiz Set 30

Questions
1 The forest in oxisol is
1 Tropical rainforest with wet and hot climates.
2 Temperate grassland with hot summer and cold winter
3 Evergreen forest with cold climate
4 Temperate deciduous forest with hot summer and cold winter.

Answer: Tropical rainforest with wet and hot climates
2 In profundal zone, P and R ratio,P/R is
1 > 1
2 < 1
3 = 1
4 > 0.1

Answer: < 1
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3 Among the following taxonomic groups which one has the least number of known species ?
1 Nematodes
2 Fungi
3 Porifera
4 Insecta

Answer: Porifera
4 At the average surface temperature of the earth, what is the wavelength at which maximum terrestrial radiation are emitted ?
1 ~ 8.08 m
2 ~ 11.52 m
3 ~ 10.06 m
4 ~ 3.48 m

Answer: ~ 10.06 m
5 About ~ 97% of all atmospheric mass in the atmosphere lies upto an approximate height of
1 ~ 10 km
2 ~ 15 km
3 ~ 20 km
4 ~ 30 km

Answer: ~ 30 km
6 Which of the following materials is the most efficient absorber of terrestrial and solar radiation ?
1 Suspended dust particles
2 Ice particles
3 Fly ash particles
4 Black carbon particles

Answer: Black carbon particles
7 An infinitesimal air parcel rises slowly upwards in the atmosphere. In this context, which of the following statements is not correct ?
1 Heat change, dq is zero.
2 Internal energy decreases.
3 Temperature during ascent decreases
4 Lapse rate has a negative numerical value.

Answer: Lapse rate has a negative numerical value.
8 Ecosphere comprises of the following :
1 Biosphere and Troposphere.
2 Biosphere, Troposphere and Hydrosphere.
3 Biosphere, Troposphere and Hydrosphere.
4 Biosphere, Atmosphere, Hydrosphere and Lithosphere.

Answer: Biosphere, Atmosphere, Hydrosphere and Lithosphere.
9 An anemometer at a height of 10 m above the ground measures a wind speed of 0.5 m/s. For a neutral atmosphere with wind profile exponent p = 0.25, the wind speed at an elevation of 160 m will be
1 1 m/s
2 ~ 1.8 m/s
3 0.5 m/s
4 2.5 m/s

Answer: 1 m/s
10 In the initial stages of landfill, which of the following gas is predominantly released ?
1 Carbon dioxide
2 Methane and Ammonia
3 Methane
4 Hydrogen Sulphide

Answer: Carbon dioxide
11 A sampling error of 2.5758 σ; where σ is the standard deviation along with critical value of 2.5758 represents the significance level of
1 5.0%
2 1.0%
3 2.7%
4 4.55%

Answer: 1.0%
12 In random samples of 64 boats out of a total 2400 boats, the mean number of defective boats is 3.2 with a sample standard deviation 0.8. The standard error of the mean is
1 ~ 0.107
2 ~ 0.40
3 ~ 0.97
4 ~ 0.097

Answer: ~ 0.097
13 The Compensatory Afforestation Fund (CAF) was started by Government of India in the year
1 2002
2 2004
3 2006
4 2008

Answer: 2004
14 According to CRZ notification 2011, which of the following activities is permissible in CRZ-I ?
1 Removal of mangroves for housing activities.
2 Storage of hazardous cargo
3 Pipelines, conveying systems including transmission lines.
4 Reclamation of salt marshes and nesting grounds.

Answer: Pipelines, conveying systems including transmission lines.
15 Among the following methods, the most cost effective method for treating the infectious waste from hospitals is
1 Autoclaving
2 Deep burial
3 Incineration
4 Fumigation

Answer: Autoclaving

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