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Fertiliser Technology

Fertiliser Technology
pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.

44178
44020
43926
44084

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Fertiliser Technology
HPO₃ is the chemical formula of __________ phosphoric acid.

Meta
Pyro
Ortho
None of these

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Fertiliser Technology
Electric furnace method for production of phosphorous uses phosphate rock

Silica and coke
And sulphuric acid
And phosphoric acid
And coke

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Fertiliser Technology
CO₂ present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in

Ammoniacal liquor
Slaked lime
Methyl-Ethyl Ketone (MEK)
Mono-ethanolamine (MEA)

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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?

Butyl alcohol
Toluene
Hexane
Iso propyl alcohol

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Fertiliser Technology
Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of

Superphosphate
Triple superphosphate
Phosphorous
Phosphoric acid

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