FERTILISER TECHNOLOGY QUIZ

P₂O₅ content in superphosphate is about __________ percent.

65-70

85-90

30-35

15-20

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Cr₂O₃

MnO

Al₂O₃

K₂O

TRUE ANSWER : ?
YOUR ANSWER : ?

Lower temperature and large excess of ammonia in urea melt

Increases biuret formation

Decreases biuret formation

Does not effect biuret formation

Is undersirable

TRUE ANSWER : ?
YOUR ANSWER : ?

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

20-25

43894

15-17

44053

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ is the undesirable by-product produced in the manufacture of urea.

Carbon dioxide

Ammonium carbonate

Biuret

Ammonium carbamate

TRUE ANSWER : ?
YOUR ANSWER : ?

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

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

Soil becomes too alkaline

Soil becomes too acidic

TRUE ANSWER : ?
YOUR ANSWER : ?

Tricresyl phosphate is chemically represented as

(CH₃ C₆ H₄)₃ PO₄

NH₄H₂PO₄

(NH₄)₂HPO₄

Ca₁₀(PO₄)3F₆

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis?

Steam reforming of naphtha

Cracking of natural gas

Electrolysis of water

H? separation from coke oven gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Vetrocoke solution is

A mixture of Na₂CO₃ and As₂O₃

K₂SO₄

Na₂SO₄

A mixture of K₂CO₃ and As₂O₃

TRUE ANSWER : ?
YOUR ANSWER : ?

Reaction of orthophosphoric acid with phosphate rock produces

Superphosphate

Triple superphosphate

Metaphosphoric acid

Monoammonium phosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

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