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MCQs

Total Questions : 476 | Page 46 of 48 pages
Question 451. Which type does the following reaction belong to?
Chlorine dioxide added to destroy bacteria.
  1.    Accelerating rate
  2.    Decelerating rate
  3.    Pseudo first order
  4.    First order reaction
 Discuss Question
Answer: Option B. -> Decelerating rate
Answer: (b).Decelerating rate
Question 452. What is the EE/O for TCA in kWh/1000 US gal/order?
  1.    15
  2.    20
  3.    10
  4.    30
 Discuss Question
Answer: Option A. -> 15
Answer: (a).15
Question 453. Which of the following methods are suggested for a water flow of less than 200 Lpm?
  1.    Hypochlorinators
  2.    Vacuum chlorinators
  3.    Direct feed chlorinators
  4.    Chlorine cylinders
 Discuss Question
Answer: Option A. -> Hypochlorinators
Answer: (a).Hypochlorinators
Question 454. Which of the following is not true about gas chlorination systems?
  1.    Disinfection of swimming pools
  2.    Improves taste
  3.    Increases algae
  4.    Controls slime
 Discuss Question
Answer: Option C. -> Increases algae
Answer: (c).Increases algae
Question 455. What is the technique used to achieve microbe-free environment?
  1.    Bacteriostasis
  2.    Bactericidal
  3.    Sanitization
  4.    Asepsis
 Discuss Question
Answer: Option D. -> Asepsis
Answer: (d).Asepsis
Question 456. What is the process of removal of contaminating pathogenic micro-organisms from the articles called?
  1.    Decontamination
  2.    Sanitization
  3.    Disinfection
  4.    Sterilization
 Discuss Question
Answer: Option A. -> Decontamination
Answer: (a).Decontamination
Question 457. Ozone is formed by the interaction of _______
  1.    UV or O₂
  2.    O and O₂
  3.    O and UV
  4.    O₂ and CO
 Discuss Question
Answer: Option A. -> UV or O₂
Answer: (a).UV or O₂
Question 458. At what pH ozonation is carried out?
  1.    8
  2.    9
  3.    11
  4.    7
 Discuss Question
Answer: Option A. -> 8
Answer: (a).8
Question 459. Photo catalysis uses which of the following methods to produce free radicals?
  1.    UV rays
  2.    UV + TiO₂
  3.    Ozone + UV
  4.    TiO₂
 Discuss Question
Answer: Option B. -> UV + TiO₂
Answer: (b).UV + TiO₂
Question 460. In which year was the ozone named?
  1.    1829
  2.    1839
  3.    1849
  4.    1859
 Discuss Question
Answer: Option B. -> 1839
Answer: (b).1839

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