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21 Important sources of land pollution are
a) Industrial wastes
b) Agricultural wastes
c) Both (a) and (b)
d) None of these

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22 The main impact of urbanization on plant and animal life is
a) Increase in species
b) Mutation in species
c) Both (a) and (b)
d) Loss of species

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23 What is the masimunt allowable concentration of fluoridcs in drinking watera) 3.0 mg/l
b) 2.5 mg/l
e) 2.0 mg/l
d) 1.5 mg/l

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24 Acid rain are more prominent ina) Temperate regions
b) Tropical regions
c) Arid regions
d) None of these

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25 In which year Hon'ble Supreme Court of India made environmental education compulsorysubject at all the level of education.a) 2000
b) 2003
c) 2001
d) 2002

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26 An ecosystem consist of
a) Biotic component
b) Abiotic components
c) Both a) and b)
d) None of these.

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27 Percentage of Nitrogen in Earth's atmosphere is
a) 98%
b) 21 %
c) 78 %
d) 12%

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28 Eutrophication means
a) Waste water treatment process
b) Water purification
c) Enrichment of plant -nutrients in water bodies
d) Neutralization of waste water.

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29 Largest reservoir of Nitrogen exists in
a) Hydrosphere
b) Stratosphere
c) Lithosphere
d) Atmosphere

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30 Housing has become inaccessible to the poor due to
a) Increased population
b) High cost
c) Non - availability of land
d) None of these.

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31 During the last 30 years the percentage of decrease in agricultural land due to Urbanization is about
a) 40 %
b) 60 %
c) 0 %
d) 30 %

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32 EIA means
a) Environmental impact -assessment
b) Eco - impact assessment
c) Eco - industrial act
d) Environmental-industrial impact.

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33 The adverse effect of modern agriculture is
a) Soil pollution
b) Water pollution
c) Wastes logging
d) All of these

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34 Which of the following energy source is less Eco - friendly
a) Wind
b) Water
c) Solar
d) Thermal

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35 Which of the following is NGO?
a) Public works department
b) Pollution control board
c) Narmada Bachao Andolan
d) None of these

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36 Environment education is targeted to
a) General public
b) Technicians
c) Professionals social groups
d) All of these

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37 The ozone depletion in the stratosphere is chiefly caused by the release of
a) Chlorofluoro carbons
b) Methane
c) Carbon dioxide
d) None of these

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38 The pH of acid rain isa) Less than 5.7
b) Less than 3.7
c) Less than 1.7
d) Less than 2.7.

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39 Dental cavities in children may be caused due to water supplies deficient in
a) Calcium
b) Fluorides
c) Iron
d) None of these

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40 Loss of water content through the plants into the atmosphere is called
a) Evaporation
b) Vaporization
c) Transpiration
d) Hydraulic cycle

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41 Which is considered as energy source of future?
a) Wind
b) Ocean
c) Hydrogen
d) None of these

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42 Bhopal gas tragedy happened in the year
a) Dec 1984
b) Dec 1933
c) Dec 1994
d) Dec 1986

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43 Renewable energy isa) Primary source
b) Secondary source
c) Tertiary source
d) None ofthcse

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44 About 30% of the country's coal deposits are found in
a) Karnataka
b) Tamil nadu
c) Kashmir
d) Bihar and Orissa

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45 Cow dung can be used
a) As a manure
b) For production of biogas
c) Both (a) and (b)
d) None of these

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46 Liquid waste generated from bathrooms and kitchens are called
a) Domestic sewage
b) Run off
c) Sallages
d) All the these

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47 The max average permissible noise levels during day time hours as per environment protectionact in India is
a) 30dB
b) 45dB
c) 50dB
d) 55dB

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48 Demography is the study of
a) Animal behaviour
b) Geography
c) Rivers
d) Population growth

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49 Global warming means
a) Increase in Earth's temperature
b) Increase in solar radiation
c) Acid rain
d) All of these

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50 The protocol that reduces green house gas emission is
a) Kyoto protocol
b) Montreal protocol
c) Cartagena protocol
d) Vienna protocol

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