FERTILISER TECHNOLOGY QUIZ

HPO₃ is the chemical formula of __________ phosphoric acid.

None of these

Ortho

Pyro

Temperature and pressure in ammonia converter is

200 atm, 1000°C

450 atm, 1000°C

450 atm, 200°C

450 atm, 550°C

TRUE ANSWER : ?
YOUR ANSWER : ?

Both white phosphorous as well as red phosphorous

Reacts with hot caustic soda solution to give phosphine

Are soluble in CS₂

Burns when heated in air

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talchar (Orissa)

Use coal as conditioner in fertiliser

Gasify coal to get hydrogen from coal gas

Use coal for heating purpose

Use coal as filler in fertiliser

TRUE ANSWER : ?
YOUR ANSWER : ?

Leaching of phosphate rock by strong __________ acid produces phosphoric acid.

Hydrochloric

Either A or B

Neither A nor B

Sulphuric

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Produces lower purity acid

Is very costly

Requires lower capital investment in the plant

Uses lower grade phosphate rock

TRUE ANSWER : ?
YOUR ANSWER : ?

Prilling tower is found in the flowsheet for the manufacture of

Superphosphate

Urea

Ammonia

Triple superphosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

Phosphatic fertilisers

Accelerate fruit formation in later stages of growth

Are useful during early stage of the plant growth

Lessen the effect of excessive nitrogen application

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Ammonia synthesis gas is produced from natural gas by

Hydrogenation

Partial oxidation

Steam reforming

Thermal cracking

TRUE ANSWER : ?
YOUR ANSWER : ?

Triple superphosphate is made by reacting phosphate rock with __________ acid.

Hydrochloric

Sulphuric

Phosphoric

Nitric

TRUE ANSWER : ?
YOUR ANSWER : ?