Fertiliser Technology MCQs

Question 1

Ammonium nitrate (a fertiliser) is coated with limestone powder to

Accepted Answer

Avoid the risk of explosion

Answer

Increase its nitrogen content

Answer

Cut down its production cost

Answer

Add extra nutrient as fertiliser

Question 2

Ammonium sulphate can be produced by reacting gypsum with

Accepted Answer

Ammonium carbonate

Answer

Ammonia

Answer

Nitric acid

Answer

None of these

Question 3

P2O5 percentage in the phosphoric acid produced by wet process is about

Accepted Answer

30

Answer

10

Answer

50

Answer

70

Question 4

Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and

Accepted Answer

Ammonia

Answer

Nitric acid

Answer

Ammonium nitrate

Answer

Nitric oxide

Question 5

HPO3 is the chemical formula of __________ phosphoric acid.

Accepted Answer

Meta

Answer

Pyro

Answer

Ortho

Answer

None of these

Question 6

Dehydration of ammonium carbamate produces

Accepted Answer

Urea

Answer

Biuret

Answer

Ammonia water

Answer

None of these

Question 7

Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant?

Accepted Answer

Ammonium sulphate

Answer

Urea

Answer

CAN

Answer

Superphosphate

Question 8

Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium

Accepted Answer

Carbonate

Answer

Phosphate

Answer

Bicarbonate

Answer

Silicate

Question 9

Pick out the wrong statement.

Accepted Answer

Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable

Answer

Dehydration of ammonium carbamate to produce urea is endothermic

Answer

Gypsum (CaSO4.2H2O) is obtained as a by-product in the wet process for manufacture of ortho-phosphoric acid

Answer

Phosphate rock when reacted with dilute H2SO4 produces superphosphate