FERTILISER TECHNOLOGY QUIZ

Urea

None of these

Biuret

Ammonia water

None of these

During the early stage of growth to promote development of stem and leaves

For accelerating fruit formation in later stage of growth

To lessen the effect of excessive potash application

Water

Tar

Naphtha

Coal/coke oven gas

None of these

Nitrogeneous fertiliser

Potassic fertiliser

Phosphatic fertiliser

Avoid the risk of explosion

Increase its nitrogen content

Cut down its production cost

Add extra nutrient as fertiliser

Ammonium phosphate

Calcium fluoride

Calcium phosphate

Flour apatite

Electrolysis of water

Cryogenic separation of hydrogen from coke oven gas

Steam reforming of naphtha and cracking of natural gas

All of these

Room temperature

Atmospheric pressure

Very high pressure

>600°C

Only 5 to 10% active fertiliser constituents

None of these

5 to 10% filler & carrier of soil conditioners

5, 10, 5% respectively of N₂, P₂O₅ and K₂O

Vaporises at normal temperature

Is toxic and highly corrosive

Has a pungent smell

Is in short supply