Fertiliser Technology

101.Maximum stability of white phosphorous is at

1. Very high pressure
2. Atmospheric pressure
3. Room temperature
4. > 600°C

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102.Montecatini process is a widely used process for the manufacture of

1. Urea
2. Calcium ammonium nitrate
3. Triple superphosphate
4. None of these

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103.Montecatini process is used for the manufacture of

1. Nitric acid
2. Phosphoric acid
3. Urea
4. Calcium ammonium nitrate (CAN)

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104.Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of

1. Comparatively higher pressure drop
2. High cost of the high pressure vessel used for the reactor
3. Higher pumping cost
4. Chances of entrainment and disturbance of catalyst bed

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105.Naphtha in a fertiliser plant is used as a source of

1. Fuel
2. H₂
3. N₄
4. O₂

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106.Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an _________ reaction.

1. Catalytic
2. Endothermic
3. Exothermic
4. Autocatalytic

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107.Nitric acid is produced on commercial scale in a fertiliser plant by

1. Oxidation of ammonia
2. CaNO₃ + H₂SO₄ reaction
3. Passing air through high voltage electric arc
4. None of these

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108.Nitrogen content in ammonium sulphate (a fertiliser) is around _________ percent.

1. 5
2. 20
3. 50
4. 65

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109.Nitrogen content of a nitrogenous fertiliser is 35%. It could be

1. Urea
2. Ammonium nitrate
3. Calcium ammonium nitrate (CAN)
4. Ammonium sulphate

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110.Nitrogen content of calcium ammonium nitrate (CAN) is _________ percent.

1. 10
2. 25
3. 50
4. 80

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