FERTILISER TECHNOLOGY QUIZ

A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.

Salt & coke

And coke

Sand & coke

And sand

TRUE ANSWER : ?
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C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about

13

6

2

20

TRUE ANSWER : ?
YOUR ANSWER : ?

Iron is not used alone as a catalyst in ammonia synthesis, because

It decomposes ammonia

None of these

It gets oxidised above 500°C

Its activity declines rapidly, if heated to above 520°C

TRUE ANSWER : ?
YOUR ANSWER : ?

Nitrogenous fertiliser is required

None of these

To lessen the effect of excessive potash application

During the early stage of growth to promote development of stem and leaves

For accelerating fruit formation in later stage of growth

TRUE ANSWER : ?
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Conditioners like finely divided peat are added to the fertiliser to

Avoid caking & hardening

Produce bulk

Counteract burning

Increase its solubility

TRUE ANSWER : ?
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Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by

Cryogenic separation of hydrogen from coke oven gas

Electrolysis of water

All of these

Steam reforming of naphtha and cracking of natural gas

TRUE ANSWER : ?
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Calcium ammonium nitrate (CAN) is

Not a fertiliser ; it is an explosive

A complex fertiliser

A mixed fertiliser

A straight fertiliser

TRUE ANSWER : ?
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Catalyst used in steam reforming of naphtha is

Platinum

Rhodium

Silica gel

Nickel

TRUE ANSWER : ?
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Ammonium nitrate (a fertiliser) is coated with limestone powder to

Increase its nitrogen content

Avoid the risk of explosion

Add extra nutrient as fertiliser

Cut down its production cost

TRUE ANSWER : ?
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Catalyst used in the manufacture of NH₃ by Haber's process is finely divided

Iron

Nickel

Alumina

Vanadium pentoxide

TRUE ANSWER : ?
YOUR ANSWER : ?