The most commonly and widely used nitrogenous fertilizer in Pakistan is:
Correct answer: B. Urea
- A. Ammonium nitrate
- B. Urea
- C. Ammonium Sulphate
- D. Anhydrous ammonia
Explanation
Urea, CO(NH₂)₂, has the highest nitrogen content of all solid nitrogenous fertilizers. This, combined with its ease of transport and relatively low production cost, makes it the most widely used nitrogen fertilizer globally.
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Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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