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Fertiliser Technology

Fertiliser Technology
A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.

And sand
And coke
Sand & coke
Salt & coke

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Fertiliser Technology
Urea is a __________ fertiliser.

Phosphatic
Potassic
Nitrogenous
None of these

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

It is not available
It is very costly
Its N₂ content is very low
It will evaporate on spraying

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Fertiliser Technology
Both white phosphorous as well as red phosphorous

Reacts with hot caustic soda solution to give phosphine
Are soluble in CS₂
All of these
Burns when heated in air

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Fertiliser Technology
Vetrocoke solution is

A mixture of K₂CO₃ and As₂O₃
A mixture of Na₂CO₃ and As₂O₃
K₂SO₄
Na₂SO₄

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

None of these
Ortho
Meta
Pyro

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