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Fertiliser Technology

Fertiliser Technology
Which of the following does not come under the category of'primary nutrient' for plant growth?

Phosphorous
Potassium
Nitrogen
Sulphur

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Fertiliser Technology
Catalyst used in Haber's process for ammonia production is

Silica gel
Reduced iron oxide
Nickel
Vanadium pentoxide

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Fertiliser Technology
Action of phosphoric acid on rock phosphate produces

Triple superphosphate
Diammonium phosphate
Superphosphate
Nitrophosphate

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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
Pyrophosphoric acid
CaSO₄ .½H₂O and CaSO₄ crystals
Metaphosphoric acid

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Fertiliser Technology
Monte catini process is a widely used process for the manufacture of

None of these
Urea
Triple superposphate
Calcium ammonium nitrate

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

And sulphuric acid
And phosphoric acid
Silica and coke
And coke

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