FERTILISER TECHNOLOGY QUIZ

In natural gas, the C/H ratio (by weight) varies in the range of

43894

15-17

44053

20-25

TRUE ANSWER : ?
YOUR ANSWER : ?

Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in

Non-spherical prills

Biuret formation

Low bulk density product

Substantially wet non-flowing and sticky product

TRUE ANSWER : ?
YOUR ANSWER : ?

Nitrogen content of a nitrogenous fertiliser is 35%. It could be

Urea

Calcium ammonium nitrate (CAN)

Ammonium nitrate

Ammonium sulphate

TRUE ANSWER : ?
YOUR ANSWER : ?

Nitric acid is produced on commercial scale in a fertiliser plant by

Passing air through high voltage electric arc

Oxidation of ammonia

None of these

CaNO₃ + H₂SO₄ reaction

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is a catalyst promoter used in catalytic ammonia synthesis reaction?

K₂O

Al₂O₃

Cr₂O₃

MnO

TRUE ANSWER : ?
YOUR ANSWER : ?

The essential ingradient of all the synthesis gas is

O₂

H₂

N₂

CO₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Dehydration of ammonium carbamate to yield urea is a/an __________ reaction.

Catalytic

Exothermic

Endothermic

Autocatalytic

TRUE ANSWER : ?
YOUR ANSWER : ?

Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the

Soil becomes too acidic

Soil becomes too alkaline

Osmotic pressure of the soil water becomes less than that of the plant sap

Osmotic pressure of the soil water becomes higher than that of the plant sap

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following gasifiers can be attached to coal based fertiliser plants?

Kopper-Totzek gasifier

Lurgi (high pressure) gasifier

Gasifier working at 40 atm

Gasifier working at 20 atm

TRUE ANSWER : ?
YOUR ANSWER : ?

Ammonium sulphate can be produced by reacting gypsum with

Ammonia

None of these

Nitric acid

Ammonium carbonate

TRUE ANSWER : ?
YOUR ANSWER : ?

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