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

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Free Download as PDF Environmental Science 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) 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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