Environmental Studies Mid - I, September - 2011

1.The functions sin nωot, and sin mωot are always
  • Orthogonal
  • Parallel
  • Inclined
  • None
Answer: C
2.Bod means
  • Biochemical 0zone demand
  • biological oxygen demand
  • bacterial oxygen demand
  • biosphere oxygen demand
Answer: B
3.Noise is measured in
  • Decibels
  • watts
  • vars
  • cm
Answer: A
4.Permitted level of noise according to environmental pollution act is
  • 125d
  • 150d
  • 200d
  • 500d
Answer: A
5.Approximately-----------%electrical energy coming from atomic power plants
  • 10
  • 50
  • 30
  • 17
Answer: D
6.-------------------%of rain water can be stored in dams of Indian
  • 43
  • 55
  • 10
  • 18
Answer: D
7.Lead pollution is mainly due to
  • Power plants
  • oil spills
  • vehicles
  • coal firing
Answer: C
8.Ozone layer is formed by the action of sunlight
  • No2
  • Co2
  • Co
  • O2
Answer: D
9.Ozone is used as
  • Acidic
  • base
  • sterilization agent
  • pesticides
Answer: C
10.Is primary pollutant
  • H2 S04
  • H N03
  • H2 C03
  • C02
Answer: D
11.-------------------of invasion requires information on the rate and mechanism of transport and movement of organisms, on characteristics allowing a species to become successful invaders.
Answer: Ecology
12.Pharmaceutical companies often have been accused of ---------------using traditional knowledge and resources without paying royalties to native people.
Answer: biopiracy
13.–-------------- is secondary pollutant
Answer: h2so4
14.-----------------is an example of aerosol
Answer: fog
15.The thickness of ozone layer is measured in---------- unit
Answer: dobson
16.BOD means ------------------------
Answer: biological oxygen demand
17.Permissible level of oil in drinking water is------------
Answer: 0.01mg/l
18.WHO means----------------
Answer: World health Organization
19.Acid rain may effects------------------
Answer: corrosion of metal parts
20.Waste plastic can be converted into-----------------
Answer: lpg