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Environmental Science Objective Questions and Answers for Competitive Exams | Page-3

Questions
21 Which of the following is an indicator of air pollution?
A Lichens
B Algae
C Cycas
D Bryophytes

Answer: Option [A]
22 Carbon monoxide poisoning can be cured by
A Eating butter.
B Drinking lemon-water.
C Consuming multi-vitamin tablet.
D Exposing the affected person to fresh oxygen

Answer: Option [D]
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23 Which of the following fuels causes minimum environmental pollution?
A Coal
B Hydrogen
C Diesel
D Kerosene

Answer: Option [B]
24 The biological decomposition of organic controlled conditions known as
A Pyrolysis
B Sanitary landfill
C Incineration
D Composting

Answer: Option [D]
25 ‘Green House Effect’ means
A cultivation of crops in green house to conserve heat
B trapping of solar energy due to carbon dioxide gases
C trapping of solar energy by earth upper surface
D increase of heat due to atmospheric pollution

Answer: Option [B]
26 The maximum biological damage is produced by
A X-rays
B beta-rays
C gamma-rays
D alpha-rays

Answer: Option [C]
27 What does ‘Ozone Layer’ absorb?
A g-rays
B X-rays
C Infrared rays
D Ultraviolet rays

Answer: Option [D]
28 ‘Kyoto Protocol’, an agreement signed by various countries, is associated with
A International Trade
B Deep Sea Oil and Mineral Exploration
C Clean Environment and Climate Change
D Building common food stock to save human beings from any natural disaster

Answer: Option [C]
29 The term ‘Green Revolution’ was coined by
A William Gaud
B Charles Elton
C Eugene Odum
D M.S. Swaminathan

Answer: Option [A]
30 Potential of air pollution increases when the ventilation coefficient is
A >11,000 m2/s
B >7,600 m2/s
C <3,600 m2/s
D <6,000 m2/s

Answer: Option [D]

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