FERTILISER TECHNOLOGY QUIZ

Which is the best fertiliser for paddy?

Ammonium sulphate

Nitro-phosphate

Potassium nitrate

Superphosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

Heating of orthophosphoric acid to 250°C produces

Pyrophosphoric acid

None of these

No change in it

Metaphosphoric acid

TRUE ANSWER : ?
YOUR ANSWER : ?

Triple superphosphate which contains about 46% P₂O₅ is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration.

52-54

> 98

25-28

75-80

TRUE ANSWER : ?
YOUR ANSWER : ?

A phosphatic fertiliser contains 16% P₂O₅. It could be

Triple superphosphate

Superphosphate

Dicalcium phosphate

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Vetrocoke solution is

A mixture of K₂CO₃ and As₂O₃

A mixture of Na₂CO₃ and As₂O₃

Na₂SO₄

K₂SO₄

TRUE ANSWER : ?
YOUR ANSWER : ?

In an ammonia plant, the purge off is essential to

Maintain H₂ : N₂ ratio at 3 :1

Remove uncondensed ammonia vapour

Remove excess poisonous gases

Maintain inert gas concentration within a limit

TRUE ANSWER : ?
YOUR ANSWER : ?

In the manufacture of H₃ PO₄ (ortho), ; strong H₂ SO₄ leaching wet process as compared to electric furnace process

Is very costly

Produces lower purity acid

Uses lower grade phosphate rock

Requires lower capital investment in the plant

TRUE ANSWER : ?
YOUR ANSWER : ?

Nitrolime is chemically known as

Ammonium nitrate

None of these

Calcium nitrate

Calcium ammonium nitrate (CAN)

TRUE ANSWER : ?
YOUR ANSWER : ?

Urea is a __________ fertiliser.

None of these

Potassic

Nitrogenous

Phosphatic

TRUE ANSWER : ?
YOUR ANSWER : ?

Prilling tower is found in the flowsheet for the manufacture of

Urea

Superphosphate

Triple superphosphate

Ammonia

TRUE ANSWER : ?
YOUR ANSWER : ?

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