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Fertiliser Technology

Fertiliser Technology
C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about

6
20
2
13

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Fertiliser Technology
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because

It is a liquid at room temperature
Its nitrogen content is very less
It is hygroscopic and explosive in nature
It is highly acidic in nature

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Fertiliser Technology
__________ catalyst is used in the production of urea from CO₂ and NH₃.

Nickel
Vanadium pentoxide
Alumina
No

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Fertiliser Technology
Raw materials for nitric acid manufacture are

Hydrogen peroxide, air and water
Anhydrous ammonia and air
Wet ammonia, air and water
Anhydrous ammonia, air and water

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Fertiliser Technology
Triple superphosphate is made by reacting phosphate rock with __________ acid.

Sulphuric
Phosphoric
Hydrochloric
Nitric

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Fertiliser Technology
Conversion achieved in HNO₃ synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by

Decreasing the pressure
Decreasing the temperature
Increasing the temperature
None of these

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