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Environmental Issues · Question 64

AIPMT 2008MCQEasy📈 Topic in 38% papers+4−1
1

According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health?

  1. 2.5 or less
  2. 1.5 or less
  3. 1.0 or less
  4. 5.2–2.5

Answer

(1) 2.5 or less

Solution

As per NCERT, according to the Central Pollution Control Board (CPCB), particulate matter of size 2.5 m or less in diameter ( PM2.5) is responsible for causing the greatest harm to human health.

These fine particles are inhaled deep into the lungs and cause breathing and respiratory problems, irritation, inflammation and damage to the lungs, and premature deaths.

Answer: (1)

Out of syllabusAIPMT 2008

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2

Which one of the following is the correct percentage of the two (out of the total of 4) greenhouse gases that contribute to the total global warming?

  1. CFCs 14%, Methane 20%
  2. CO2 40%, CFCs 30%
  3. N2O 6%, CO2 86%
  4. Methane 20%, N2O 18%
Out of syllabusAIPMT 2008
3

In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order?

  1. SE < PE < S < DE
  2. SE < S < PE < DE
  3. PE < S < SE < DE
  4. S < DE < PE < SE
Out of syllabusAIPMT 2007
4

In a coal fired power plant electrostatic precipitators are installed to control emission of:-

  1. SPM
  2. SO2
  3. CO
  4. NOx
Out of syllabusAIPMT 2007
5

Which one of the following is not a bioindicator of water pollution?

  1. Blood-worms
  2. Stone flies
  3. Sewage fungus
  4. Sludge-worms
Out of syllabusAIPMT 2007
6

Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste waters into natural surface waters, is -

  1. <30 ppm
  2. <3.0 ppm
  3. <100 ppm
  4. <10 ppm
Out of syllabusAIPMT 2006
7

Photochemical smog pollution does not contain-

  1. Nitrogen dioxide
  2. PAN (peroxy acyl nitrate)
  3. Ozone
  4. Carbon dioxide
Out of syllabusAIPMT 2006
8

Montreal Protocol which calls for appropriate action to protect the ozone layer from human activities was passed in the year-

  1. 1988
  2. 1986
  3. 1985
  4. 1987
Out of syllabusAIPMT 2006
9

Prolonged liberal irrigation of agricultural fields is likely to create the problem of -

  1. Salinity
  2. Acidity
  3. Aridity
  4. Metal toxicity
Out of syllabusAIPMT 2005
10

Which of the following is not used for disinfection of drinking water ?

  1. Chloramine
  2. Ozone
  3. Chlorine
  4. Phenyle
Out of syllabusAIPMT 2005
11

Identify the correctly matched pair -

  1. Basel Convention – Biodiversity Conservation
  2. Kyoto Protocol – Climatic change
  3. Ramsar Convention – Ground water pollution
  4. Montreal Protocol – Global warming
Out of syllabusAIPMT 2005

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