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MCQs

Total Questions : 360 | Page 30 of 36 pages
Question 291. In-situ in-stack analysers are used for measuring concentrations of which of the following gases?
  1.    Ammonia
  2.    Sulphur dioxide
  3.    Nitrogen monoxide
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 292. What is the disadvantage of using conductometric analysers?
  1.    Low sensitivity
  2.    Interfering gases must be removed before monitoring process
  3.    Medium used to measure change in conductivity is expensive
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> Interfering gases must be removed before monitoring process
Answer: (b).Interfering gases must be removed before monitoring process
Question 293. What is the primary standard level for carbon monoxide for assuring air quality?
  1.    10ppm
  2.    90ppm
  3.    1ppm
  4.    9ppm
 Discuss Question
Answer: Option D. -> 9ppm
Answer: (d).9ppm
Question 294. Flame photometric analysers are specific to sulphur compounds.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 295. Airshed modelling takes into account the effects of only stationary sources and not the mobile sources of pollution.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 296. What does the abbreviation VOC stand for?
  1.    Versatile Oxygenated Compounds
  2.    Volatile Oxygenated Compounds
  3.    Volatile Organic Carbons
  4.    Volatile Organic Compounds
 Discuss Question
Answer: Option D. -> Volatile Organic Compounds
Answer: (d).Volatile Organic Compounds
Question 297. Which is the largest-volume manufactured organic chemical?
  1.    Ethylene
  2.    Ethane
  3.    Formaldehyde
  4.    Carbonic acid
 Discuss Question
Answer: Option A. -> Ethylene
Answer: (a).Ethylene
Question 298. What is the range of vapour pressure of VOCs?
  1.    High vapour pressure
  2.    Low vapour pressure
  3.    Depends on the concentration of VOCs
  4.    Depends on the type of VOCs
 Discuss Question
Answer: Option B. -> Low vapour pressure
Answer: (b).Low vapour pressure
Question 299. What does PAH stand for in terms of organic chemistry?
  1.    Polynuclear Aromatic Hydrocarbons
  2.    Polyethylene Acetic Hydride
  3.    Polycyclic Acetic Hydrocarbons
  4.    Polynuclear Aromatic Hydrides
 Discuss Question
Answer: Option A. -> Polynuclear Aromatic Hydrocarbons
Answer: (a).Polynuclear Aromatic Hydrocarbons
Question 300. What is the residence time (average time a particle is active in a given system) of carbon monoxide?
  1.    11-15 years
  2.    0.1-0.3 years
  3.    0.5 years
  4.    Few minutes
 Discuss Question
Answer: Option B. -> 0.1-0.3 years
Answer: (b).0.1-0.3 years

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