Fertiliser Technology

91.Largest capacity nitrogenous fertiliser plants (2700 tons of NH₃ per day) (2 Nos.) in India are located at

1. Thal-Vaishet (under RCF in Maharashtra) and Hazira (under IFFCO in Gujarat)
2. Talcher (Orissa) and Ramagundam (A.P.) both under FCI
3. Korba (M.P.) and Talcher (Orissa) both under FCI
4. Haldia (W.B) and Namrup (Assam) both under HFC

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92.Leaching of phosphate rock by strong _________ acid produces phosphoric acid.

1. Sulphuric
2. Hydrochloric
3. Either (A) or (B)
4. Neither (A) nor (B)

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93.Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is

1. Exothermic
2. Endothermic
3. Autocatalytic
4. None of these

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94.Liquid ammonia is not used as such a fertiliser in tropical countries like India, because

1. Its N₄ content is very low
2. It is very costly
3. It will evaporate on spraying
4. It is not available

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95.Low grade coal is _________ to produce ammonia synthesis gas.

1. Hydrogenated
2. Liquefied
3. Gasified
4. Dehydrogenated

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96.Low grade phosphate rock can be used in electrical furnace, because

1. Of the better CaO/SiO₂ balance for slag formation
2. CaO content is less
3. It is cheap
4. It produces low cost product

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97.Lower temperature and large excess of ammonia in urea melt

1. Increases biuret formation
2. Decreases biuret formation
3. Is undesirable
4. Does not effect biuret formation

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98.Main component of bone ash is

1. Calcium sulphate
2. Calcium phosphate
3. Calcium carbonate
4. Sodium phosphate

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99.Main constituent of phosphate rock is

1. Ammonium phosphate
2. Flour apatite
3. Calcium fluoride
4. Calcium phosphate

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100.Maximum nitrogen percentage is in

1. Ammonium sulphate
2. Calcium ammonium nitrate
3. Urea
4. Liquid ammonia

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