Which of the following pairs is mismatched?
  • 1

    Turmeric powder-Metallic yellow

  • 2

    Freon-Chloro-fluoro-carbon

  • 3

    Greenhouse gas - Carbondioxide

  • 4

    Contour farming-Soil erosion

Answer:- 4
Explanation:-

Contour farming is not related to soil erosion. It is the form of farming which is related to hilly areas. This is not in matching with soil erosion.

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