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MCQs

Total Questions : 2441 | Page 27 of 245 pages
Question 261. Hardgrove grindability index of four coal samples are given below. Which of them is the easiest to grind?
  1.    50
  2.    70
  3.    85
  4.    100
 Discuss Question
Answer: Option D. -> 100
Question 262. Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant?
  1.    Ammonium sulphate
  2.    Ammonium nitrate
  3.    Ammonium phosphate
  4.    None of these
 Discuss Question
Answer: Option A. -> Ammonium sulphate
Question 263. A coal having higher volatile matter content, has lower
  1.    Smoking tendency on burning
  2.    Coke oven gas yield on carbonisation
  3.    Chance of catching fire during storage in open space
  4.    Ignition temperature
 Discuss Question
Answer: Option D. -> Ignition temperature
Question 264. A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be
  1.    More
  2.    Less
  3.    Same
  4.    Data insufficient; can't be predicted
 Discuss Question
Answer: Option C. -> Same
Question 265. Gross calorific value will be equal to the net calorific value for
  1.    H₂
  2.    C₂H₂
  3.    CO
  4.    C₂H₆
 Discuss Question
Answer: Option C. -> CO
Question 266. Which of the following petrographic constituents of coal is non-coking?
  1.    Vitrain
  2.    Clarain
  3.    Durain
  4.    Fussain
 Discuss Question
Answer: Option D. -> Fussain
Question 267. Power alcohol as compared to straight run gasoline has lower
  1.    Calorific value
  2.    Octane number
  3.    Specific gravity
  4.    Viscosity
 Discuss Question
Answer: Option A. -> Calorific value
Question 268. Moisture loss is determined by the
  1.    Humidity of combustion air
  2.    Moisture content of fuel
  3.    Both A and B
  4.    The water formed by combustion reaction
 Discuss Question
Answer: Option C. -> Both A and B
Question 269. Main constituent of the gas produced from a gobar gas plant is
  1.    CO₂
  2.    CH₄
  3.    H₂
  4.    CO
 Discuss Question
Answer: Option B. -> CH₄
Question 270. Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher
  1.    Calorific value
  2.    Higher C/H ratio
  3.    Sulphur content
  4.    Difference in gross & net calorific value
 Discuss Question
Answer: Option B. -> Higher C/H ratio

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