☰ Pollution (Air and Noise) (Civil Engineering) - MCQs

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Q19.

Rainluft process is used for :

  • A. desulphurization of flue gas
  • B. removing carbon from flue
  • C. checking the atmospheric pollution
  • D. none of the above
    ✍ Discuss    
Q20.

Pollutant standards Index (PSI) value in between 101-199 denotes the air quality as ;

  • A. good
  • B. moderate
  • C. unhealthy
  • D. hazardous
    ✍ Discuss    
Q21.

Most natural hydrocarbons in air from :

  • A. biological source
  • B. geothermal area source
  • C. coal field source
  • D. petrolqeum fields source
    ✍ Discuss    
Q22.

Concentration of ozone in clean air is :

  • A. 0.5 ppm
  • B. 0.1 ppm
  • C. 0.001 ppm
  • D. 0.01 ppm
    ✍ Discuss    
Q23.

Most commonly used control device for particulate matter is :

  • A. filter bey house
  • B. eletronic precipitator
  • C. cyclone collector
  • D. none of these
    ✍ Discuss    
Q24.

Pollutant Standards Index (PSI) value greater than 300 denotes the air quality as :

  • A. good
  • B. moderate
  • C. unhealthful
  • D. hazardous
    ✍ Discuss    
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