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Fertiliser Technology

Q1: Pick out the wrong statement.

A Nitrogen is normally supplied in fertiliser either in ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions or nitrate ions and forms amino acids.

B Calcium present in the fertiliser helps in correcting the soil acidity.

C Particle size range of a good grannular fertiliser is 10-15 mesh and it contains less moisture as compared to finely divided powder form of fertiliser.

D Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens.

ANS:D - Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens.

The wrong statement is: "Particle size range of a good granular fertilizer is 10-15 mesh and it contains less moisture as compared to finely divided powder form of fertilizer." This statement is incorrect because granular fertilizers typically have larger particle sizes than 10-15 mesh. Granular fertilizers often have particle sizes ranging from 2 to 4 millimeters, which is much larger than the mesh size mentioned in the statement. Additionally, granular fertilizers may not necessarily contain less moisture than finely divided powder forms; the moisture content can vary depending on the specific formulation and manufacturing process.



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