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      Question

      Chemicals like hexadeconol, a long chain alcohol when

      mixed with surface 5 mm of soil can reduce evaporation by about:
      A 5% Correct Answer Incorrect Answer
      B 10% Correct Answer Incorrect Answer
      C 20% Correct Answer Incorrect Answer
      D 40% Correct Answer Incorrect Answer
      E 15% Correct Answer Incorrect Answer

      Solution

      In chemical mulches, chemicals like hexadeconol, a long chain alcohol when mixed with surface 5 mm of soil can reduce evaporation by about 40%. The surface layer of a treated soil dries out more rapidly than that of untreated soil, creating a diffusional layer to evaporation.

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