Fertiliser Technology

61.Electric furnace method for production of phosphorous uses phosphate rock and _________

  1. Phosphoric acid
  2. Coke
  3. Sulphuric acid
  4. Silica and coke
Correct answer: (D)
Silica and coke

62.Electric process as compared to wet process (for the manufacture of phosphoric acid)

  1. Can use only high grade phosphate rock
  2. Is used less frequently
  3. Produces a valuable by-product called gypsum
  4. Is weak acid process
Correct answer: (B)
Is used less frequently

63.Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the

  1. Osmotic pressure of the soil water becomes less than that of the plant sap
  2. Soil becomes too alkaline
  3. Osmotic pressure of the soil water becomes higher than that of the plant sap
  4. Soil becomes too acidic
Correct answer: (C)
Osmotic pressure of the soil water becomes higher than that of the plant sap

64.Fauser Montecatini converter is used for

  1. Ammonia synthesis (e.g. at FCI Sindri, India)
  2. Methanation of CO and CO2
  3. Shift conversion (i.e. CO to CO2)
  4. None of these
Correct answer: (A)
Ammonia synthesis (e.g. at FCI Sindri, India)

65.Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located in India at

  1. Rourkela (under SAIL)
  2. Bokaro (under SAIL)
  3. Sindri (under FCI)
  4. Baroda (under G.S.F.C.)
Correct answer: (C)
Sindri (under FCI)

66.Fertiliser plants get their N4 requirements

  1. By fractionation of liquefied air
  2. By dissociating oxides of nitrogen
  3. From coal gas (coke oven gas)
  4. From producer gas
Correct answer: (A)
By fractionation of liquefied air

67.Fertiliser produced during soda ash manufacture by dual process is ammonium

  1. Chloride
  2. Sulphate
  3. Nitrate
  4. None of these
Correct answer: (A)
Chloride

68.Fertiliser value of a nitrogenous fertiliser is expressed in terms of its _________ content.

  1. N4
  2. KNO3
  3. NO2
  4. NHO3
Correct answer: (A)

N4

69.Fertilizer plant getting its hydrogen requirement partly from coke oven gas is (in India) situated at

  1. Rourkela (under SAIL)
  2. Barauni (under HFC)
  3. Nangal (under NFL)
  4. Talcher (under FCI)
Correct answer: (A)
Rourkela (under SAIL)

70.Flushing liquor used for cooling coke oven gas constitutes of

  1. Ammoniacal liquor
  2. K2CO3 solution
  3. Dilute H2SO4
  4. Dilute HCl
Correct answer: (A)
Ammoniacal liquor
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