Q. Chemical formula of biuret is

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Q. Rock phosphate constitutes mainly of

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Q. Dehydration of ammonium carbamate produces

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Q. Ammonia synthesis reaction is

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Q. Phosphatic fertilisers

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Q. Naphtha in a fertiliser plant is used as a source of

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Q. Pick out the wrong statement.

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Q. Maximum nitrogen percentage is in

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Q. Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.

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Q. Triple superphosphate is chemically represented as

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Q. 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

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Q. Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talchar (Orissa)

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Q. Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.

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Q. Which of the following gasifiers can be attached to coal based fertiliser plants ?

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Q. NPK fertiliser is a __________ fertiliser.

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Q. Reaction of calcium fluorapatite with sulphuric acid produces

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Q. Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas?

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Q. Fertiliser value of a nitrogeneous fertiliser is expressed in terms of its __________ content.

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Q. Triple superphosphate is made by reacting phosphate rock with __________ acid.

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Q. C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about

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