FERTILISER TECHNOLOGY QUIZ

Conditioners like finely divided peat are added to the fertiliser to

Produce bulk

Avoid caking & hardening

Increase its solubility

Counteract burning

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Which nutrient in fertiliser makes the plant stems stronger and increases branching?

Phosphorous

Calcium

Potassium

Nitrogen

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Ammonium nitrate is

Not prone to explosive thermal decomposition

Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer

Having about 40% N₂

Not hygroscopic

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Catalyst used in Haber's process for ammonia production is

Silica gel

Vanadium pentoxide

Nickel

Reduced iron oxide

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In calcium ammonium nitrate (CAN) fertil-ser

Nitrate nitrogen is slower acting

Ammoniacal nitrogen is quick acting

None of these

Nitrate nitrogen is quick acting

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A potassic fertiliser contains 50% K₂O. It could be

Potassium sulphate

A mixture of NaCl+ KCl

Potassium chloride

None of these

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Plant tranquillisers

Cause early maturation of plants

Hold back stem growth and halt plants at a desired height

Accelerate ripening of food and grain

Produce seedless fruit

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Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition?

Natural gas cracking

Electrolysis of water

Cryogenic removal of H₂ from coke oven gas

Steam reforming of naphtha

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Nitrolime is chemically known as

Calcium nitrate

Ammonium nitrate

Calcium ammonium nitrate (CAN)

None of these

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Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process.

Endothermic

Non-catalytic

Autocatalytic

Exothermic

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