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hardMCQUPTET Paper 2 (Social Science)2026Social Studies
1 mark

Which fertilizer is highly hygroscopic?

  1. A
    Calcium ammonium nitrate
  2. B
    Sodium nitrate
  3. C
    Ammonium sulphate
  4. D
    Urea

Solution & Step-by-step Explanation

Hygroscopicity is the property of a material to actively absorb ambient moisture from its surrounding air. Among the common synthetic dry nitrogenous fertilizers provided, Urea possesses a very low critical relative humidity threshold and is exceptionally hygroscopic, requiring specialized moisture-proof storage.

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Which fertilizer is highly hygroscopic?
A
Calcium ammonium nitrate
B
Sodium nitrate
C
Ammonium sulphate
D
Urea

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AgricultureSoil ChemistryFertilizers

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