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MCQs

Total Questions : 360 | Page 36 of 36 pages
Question 351. What reduces amount of light reaching leaf?
  1.    Sulfur oxide emission
  2.    Carbon dioxide
  3.    Dust and Smog
  4.    Nitrogen
 Discuss Question
Answer: Option C. -> Dust and Smog
Answer: (c).Dust and Smog
Question 352. What are biological particles found in atmosphere?
  1.    Bacteria, Viruses and Fungi
  2.    Smoke and gas
  3.    Inorganic dusts and water vapours
  4.    Metallic fumes
 Discuss Question
Answer: Option A. -> Bacteria, Viruses and Fungi
Answer: (a).Bacteria, Viruses and Fungi
Question 353. Term 'aerosol' is applicable as long as particle is suspended in
  1.    Water
  2.    Air
  3.    Soil
  4.    Objects
 Discuss Question
Answer: Option B. -> Air
Answer: (b).Air
Question 354. Which hydrocarbon is biologically active and potentially carcinogenic?
  1.    Aliphatic hydrocarbon
  2.    Aromatic hydrocarbon
  3.    Alkenes hydrocarbon
  4.    Alkynes hydrocarbon
 Discuss Question
Answer: Option B. -> Aromatic hydrocarbon
Answer: (b).Aromatic hydrocarbon
Question 355. Which gas is bluish in color and has pungent odor?
  1.    CO₂
  2.    O₂
  3.    O₃
  4.    H₂S
 Discuss Question
Answer: Option C. -> O₃
Answer: (c).O₃
Question 356. Which of the following is the absorption unit?
  1.    Cyclone collector
  2.    Plate tower
  3.    Gravitation settling chamber
  4.    Dynamic precipitator
 Discuss Question
Answer: Option B. -> Plate tower
Answer: (b).Plate tower
Question 357. Which of the following is a bulk phenomena?
  1.    Physical adsorption
  2.    Chemical adsorption
  3.    Absorption
  4.    Sorption
 Discuss Question
Answer: Option C. -> Absorption
Answer: (c).Absorption
Question 358. Which of the following is not a part of adsorption unit?
  1.    Packed towers
  2.    Multiple fixed bed
  3.    Fluidized bed
  4.    Moving bed
 Discuss Question
Answer: Option A. -> Packed towers
Answer: (a).Packed towers
Question 359. Which of the following catalyst is used for removing hydrocarbon from gaseous pollutant in combustion unit?
  1.    Platinum
  2.    Activated alumina
  3.    Vanadium
  4.    Potassium permanganate
 Discuss Question
Answer: Option B. -> Activated alumina
Answer: (b).Activated alumina
Question 360. Which of the following is not an adsorbent?
  1.    Molecular sieves
  2.    Activated carbon
  3.    Activated alumina
  4.    Water
 Discuss Question
Answer: Option D. -> Water
Answer: (d).Water

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