FERTILISER TECHNOLOGY QUIZ

Color of nitric acid is light yellow due to the presence of

N₂H₅

NH₃

NO

NO₂

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Conversion achieved in HNO₃ synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by

Increasing the temperature

Decreasing the temperature

Decreasing the pressure

None of these

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Phosphatic fertiliser is graded based on its __________ content.

P₂O₃

P₂O₅

H₃PO₄

PCl5

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Out of the following, N₂ content is minimum in

Urea

Ammonium nitrate

Ammonium sulphate

Ammonium chloride

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Main component of bone ash is

Calcium carbonate

Calcium phosphate

Sodium phosphate

Calcium sulphate

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Catalyst used in Haber's process for ammonia production is

Reduced iron oxide

Silica gel

Nickel

Vanadium pentoxide

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Plant tranquillisers

Cause early maturation of plants

Hold back stem growth and halt plants at a desired height

Produce seedless fruit

Accelerate ripening of food and grain

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Low grade coal is __________ to produce ammonia synthesis gas.

Gasified

Dehydrogenated

Hydrogenated

Liquefied

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Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in

Biuret formation

Substantially wet non-flowing and sticky product

Low bulk density product

Non-spherical prills

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Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH₃

HNO₃ & NH₄Cl

HNO₃ & limestone

CO₂ & H₂SO₄

CO₂ & KNO₃

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