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MCQs

Total Questions : 15 | Page 1 of 2 pages
Question 1. Which of the following removes both gaseous and particulate contaminants?
  1.    Gravitational settling chamber
  2.    Venturi scrubber
  3.    Dynamic precipitator
  4.    Wet scrubber
 Discuss Question
Answer: Option B. -> Venturi scrubber
Question 2. Ringelmann chart is used for the evaluation of __________ pollution
  1.    Water
  2.    Radioactive
  3.    Air
  4.    Noise
 Discuss Question
Answer: Option C. -> Air
Question 3. Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes
  1.    Asphyxiation (suffocation)
  2.    Shortness of breath
  3.    Tuberculosis
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Question 4. Which of the following acts as a natural source of air pollution
  1.    Deforestation
  2.    Forest fire
  3.    Volcanic eruption
  4.    All of above
 Discuss Question
Answer: Option C. -> Volcanic eruption
Question 5. Which of the following fluid is used in web scrubbers?
  1.    MgSO
  2.    Lime
  3.    NaCl
  4.    None of these
 Discuss Question
Answer: Option B. -> Lime
Question 6. The gas which is responsible for heart attacks and high mortality rates caused by incomplete combustion of organic matter is
  1.    Hydrogen sulphide
  2.    Carbon monoxide
  3.    Nitrogen oxide
  4.    Sulphur dioxide
 Discuss Question
Answer: Option C. -> Nitrogen oxide
Question 7. The addition of 50 decibel noise with another 50 decibel noise is equivalent to a noise of
  1.    43 decibel
  2.    53 decibel
  3.    83 decibel
  4.    100 decibel
 Discuss Question
Answer: Option B. -> 53 decibel
Question 8. Photochemical smog is formed from automobile exhaust
  1.    Appears only on sunny days
  2.    Is harmful for crops and trees also besides causing eye irritation & asthma
  3.    By reaction of hydrocarbon & nitric oxide in presence of sunlight
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Question 9. Which one of the following is NOT present in the acid rain?
  1.    HNO₃
  2.    H₂SO₄
  3.    H₂CO₃
  4.    CH₃COOH
 Discuss Question
Answer: Option D. -> CH₃COOH
Question 10. From among the different pollutants listed that cause air pollution, identify the secondary air pollutant
  1.    Sulphuric acid (H2SO4)
  2.    Oxides of Nitrogen (NO)
  3.    Sulphur dioxide (SO
  4.    Suspended particular matter (SPM)
 Discuss Question
Answer: Option A. -> Sulphuric acid (H2SO4)

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