Q. Which of the following is not a measure component necessarily to be present in fertilisers?

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Q. Nitric acid is produced on commercial scale in a fertiliser plant by

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Q. Pick out the wrong statement.

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Q. P₂O₅ content in superphosphate is about __________ percent.

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Q. Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction.

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Q. Temperature and pressure in urea autoclave is

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Q. The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser.

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Q. Ammonium nitrate is

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Q. Urea is a better fertilizer than ammonium sulphate, because

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Q. Reaction of cresylic acid with __________ produces tricresyl phosphate.

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Q. In the manufacture of urea, the intermediate chemical formed is

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Q. Nitrolime is chemically known as

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Q. Catalyst used in the oxidation of ammonia is

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Q. P₂O₅ percentage in the phosphoric acid produced by wet process is about

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Q. Ammonia synthesis gas is produced from fuel oil by

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Q. Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature

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

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Q. Low grade phosphate rock can be used in electrical furnace, because

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Q. Fertiliser produced during soda ash manufacture by dual process is ammonium

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Q. In an ammonia plant, the purge off is essential to

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