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Fertiliser Technology - Engineering

Q1:

Out of the following, N2 content is minimum in

A urea

B ammonium nitrate

C ammonium sulphate

D ammonium chloride

ANS:C - ammonium sulphate

Out of the options provided, N2 content is minimum in ammonium sulphate. Ammonium sulfate [(NH4)2SO4] is a fertilizer containing nitrogen and sulfur. However, the nitrogen in ammonium sulfate is in the ammonium (NH4+) form and does not contribute to N2 content. Therefore, the N2 content in ammonium sulfate is minimal compared to the other options listed. Let's briefly compare the nitrogen content in the other fertilizers listed:

  • Urea: Urea [(NH2)2CO] contains the highest nitrogen content among the options listed. It typically has around 46% nitrogen by weight.
  • Ammonium Nitrate: Ammonium nitrate (NH4NO3) contains nitrogen in both the ammonium (NH4+) and nitrate (NO3-) forms. It generally contains around 34% nitrogen by weight.
  • Ammonium Chloride: Ammonium chloride (NH4Cl) also contains nitrogen in the ammonium (NH4+) form. It typically contains around 25% nitrogen by weight.
In summary, ammonium sulfate has the lowest N2 content among the options provided, as it does not contribute to the N2 content.