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Environmental Studies Questions and Answers for Competitive Exams | Environmental Studies Quiz Set 23

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(1) According to ZSI (GOI), which one of the following birds declined by 99% ?
(1) Sparrow
(2) Pink-headed Duck
(3) Pond heron
(4) White backed Vulture
Answer: White backed Vulture
(2) According to Convention on International Trade in Endangered species (CITES) COP 17, which one of the following is transferred from CITES Appendix II to Appendix I by January 2017.
(1) Gorilla
(2) Pangolin
(3) Tapir
(4) Mongoose
Answer: Pangolin

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(3) Taxonomic diversity of a region with several ecosystems is :
(1) Alpha diversity
(2) Beta diversity
(3) Gamma diversity
(4) Sigma diversity
Answer: Gamma diversity
(4) Soil water available to roots is
(1) Surface water
(2) Hygroscopic water
(3) Gravitational water
(4) Capillary water
Answer: Capillary water
(5) C4 plants are commonly found in
(1) Arid and hot environment
(2) Humid and low temperature environment
(3) Temperature environment
(4) Semi-humid and rainy environment
Answer: Arid and hot environment
(6) The point at which the light intensity is just enough to produce energy by photosynthesis which equal to the energy used in respiration is called
(1) Equal point
(2) Regulatory point
(3) Compensation point
(4) Complementary point
Answer: Compensation point
(7) The global pattern of prevailing winds drives the cell – like circulation pattern of ocean currents called
(1) Trade winds
(2) Gyres
(3) Jet Streams
(4) Shallow drifts
Answer: Gyres.
(8) As the number of species in a food web increases
(1) Food chain length tends to increase.
(2) System tends to be unstable
(3) Energy flow decreases
(4) System tends to collapse completely.
Answer: Food chain length tends to increase.
(9) Each degree of latitude on the earth’s surface represents approximately
(1) 91 km
(2) 101 km
(3) 111 km
(4) 121 km
Answer: 111 km
(10) Remote sensing satellites for earth observation are normally located in
(1) Elliptical orbit
(2) Sun-synchronous orbit
(3) Geo-synchronous orbit
(4) Equatorial orbit
Answer: Sun-synchronous orbit
(11) Asian Ministerial Conference on Disaster Risk Reduction – 2016 (AMCDRR – 2016) was held in
(1) Bangkok
(2) Beijing
(3) New Delhi
(4) Colombo
Answer: New Delhi
(12) Magma starts to crystallise when it loses heat during its upward rise to shallower level from a deep source. Which among the following is Bowen’s Reaction Series
(1) Pyroxene, Hornblende, Olivine, Mica, Quartz
(2) Olivine, Pyroxene, Hornblende, Mica, Quartz
(3) Hornblende, Olivine, Mica, Pyroxene, Quartz
(4) Olivine, Pyroxene, Hornblende, Mica, Quartz
Answer: Olivine, Pyroxene, Hornblende, Mica, Quartz
(13) A 2000 MW dam has maximum head of 200 m. What is the rate of falling water on the turbines ? (Neglect losses)
(1) ~ 102.00 m3/s
(2) ~ 1560.24 m3/s
(3) ~ 1020.41 m3/s
(4) ~ 800.00 m3/s
Answer: ~ 1020.41 m3/s
(14) The maximum efficiency of hydrogen fuel cell is
(1) 0.96
(2) 0.92
(3) 0.83
(4) 0.72
Answer: 0.83
(15) In a biogas digestor having biomass and animal wastes as feed, for optimum methane production, the value of pH should be such that initially
(1) pH is in the range 6.6 to 7
(2) pH < 6.2
(3) pH is in the range 7 to 7.2
(4) pH is in the range 7.6 to 8
Answer: pH is in the range 6.6 to 7

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