FERTILISER TECHNOLOGY QUIZ

Maximum stability of white phosphorous is at

Atmospheric pressure

Room temperature

Very high pressure

>600°C

TRUE ANSWER : ?
YOUR ANSWER : ?

Potassic fertilisers

Help in development of starches of potatoes and grain

Are useful during early stage of the plant growth

None of these

Stimulate early growth and accelerate seeding

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Bicarbonate

Carbonate

Silicate

Phosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a mixed fertiliser?

Calcium ammonium nitrate (CAN)

None of these

Nitrophosphate

Ammonium phosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

Effectiveness of a fertiliser is independent of the

None of these

PH of soil

Type of crop

Nature of soil

TRUE ANSWER : ?
YOUR ANSWER : ?

Reaction of orthophosphoric acid with phosphate rock produces

Monoammonium phosphate

Superphosphate

Metaphosphoric acid

Triple superphosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following fertilisers is used as a cattle feed?

Calcium ammonium nitrate

Ammonium sulphate

Superphosphate

Urea

TRUE ANSWER : ?
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In ammonia synthesis (N₂ + 3H₂ = 2NH₃), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at

High pressure

Low pressure

Atmospheric pressure; as the pressure has no effect on conversion

Very high temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Rock phosphate used for the production of phosphatic fertiliser is mined at

Bailladella (M.P.)

Kiriburu (Bihar)

Talchar (Orissa)

Amjhor (Jharkhand)

TRUE ANSWER : ?
YOUR ANSWER : ?

Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it

Has a pungent smell

Is toxic and highly corrosive

Vaporises at normal temperature

Is in short supply

TRUE ANSWER : ?
YOUR ANSWER : ?

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