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Environmental Studies Questions and Answers for Competitive Exams | Environmental Studies Quiz Set 19

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Free Download as PDF Environmental Studies 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) Thermal stratification of aquatic ecosystems takes place in
(1) tropical lakes
(2) temperate lakes
(3) glacier lakes
(4) meandering rivers
Answer: temperate lakes
(2) The scale length of pressure variations in atmosphere in vertical direction is about
(1) 3 km
(2) 4.8 km
(3) 7 km
(4) 12 km
Answer: 7 km

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(3) Which radioactive element is considered as an indoor pollutant ?
(1) Oxygen – 18
(2) Nitrogen – 15
(3) Carbon – 13
(4) Radon
Answer: Radon
(4) In a closed thermodynamic system, across its boundaries
(1) no transfer of heat is possible.
(2) no transfer of work is possible
(3) transfer of heat is possible but not of work.
(4) transfer of heat and work is possible.
Answer: transfer of heat and work is possible.
(5) In an urban area, moist air at 27 C has a mixing ratio of 50 gm per kg. Its virtual temperature is
(1) 33.69 C
(2) 38.15 C
(3) 36.15 C
(4) 32.30 C
Answer: 36.15 C
(6) Under aerobic biodegradation of DDT, which of the following compound is formed ?
(1) DDD
(2) DDE
(3) DDN
(4) DDS
Answer: DDS
(7) Among the following heavy metals, which has highest concentration in earth’s crust ?
(1) Chromium
(2) Copper
(3) Nickel
(4) Zinc
Answer: Copper
(8) Composition-wise halons are related to
(1) CFCs
(2) Halides
(3) Hydrocarbons
(4) Peptides
Answer: CFCs
(9) Which of the following gases has highest absorption co-efficient for solubility in water ?
(1) Hydrogen
(2) Nitrogen
(3) Oxygen
(4) Carbon dioxide
Answer: Carbon dioxide
(10) Quantity of glucose (MW 180) required to prepare 1000 ml of 5% solution is
(1) 5 g
(2) 50 g
(3) 900 g
(4) 9000 g
Answer: 9000 g
(11) Endemic species are
(1) Uniformly distributed across the landscape
(2) Widely distributed
(3) Restricted to a particular area
(4) Continuously distributed globally
Answer: Restricted to a particular area
(12) Which of the following is the in-situ biodiversity conservation site ?
(1) Arboretum
(2) Botanical garden
(3) Biosphere reserve
(4) Orchidarium
Answer: Biosphere reserve
(13) The largest unit of climax communities representing well defined climatic zone is referred to as
(1) Biosphere
(2) Biome
(3) Biota
(4) Landscape
Answer: Biome
(14) An active, adaptive control process which is able to maintain the overall balance is known as
(1) Bohr’s Hypothesis
(2) Miller Hypothesis
(3) Gaia Hypothesis
(4) Kepler’s Law
Answer: Gaia Hypothesis
(15) Niche of an organism is
(1) Address
(2) Profession
(3) Address
(4) Range
Answer: Profession

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