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Fertiliser Technology

Fertiliser Technology
CaH₄(PO₄)₂ is the chemical formula of

Superphosphate
Calcium phosphate
Triple superphosphate
Meta phosphoric acid

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Fertiliser Technology
Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process.

Endothermic
Exothermic
Autocatalytic
Non-catalytic

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Fertiliser Technology
Leaching of phosphate rock by strong __________ acid produces phosphoric acid.

Neither A nor B
Either A or B
Sulphuric
Hydrochloric

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Fertiliser Technology
In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable

All of these
Metaphosphoric acid
Pyrophosphoric acid
CaSO₄ .½H₂O and CaSO₄ crystals

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Fertiliser Technology
Main component of bone ash is

Calcium sulphate
Calcium carbonate
Calcium phosphate
Sodium phosphate

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Fertiliser Technology
Which of the following solvents is used for the extraction of H₃PO₄ from CaCl₂ solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?

Hexane
Toluene
Iso propyl alcohol
Butyl alcohol

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