Surface water will also include particulate and dissolved organic matter formed due to decay and leaching of organic detritus. This is collectively referred to as:

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SSC JE Civil 15 Nov 2022 Shift 3 Official Paper
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  1. chemical effervescence
  2. natural organic matter (NOM)
  3. biochemical matter
  4. biological load

Answer (Detailed Solution Below)

Option 2 : natural organic matter (NOM)
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Explanation:

Natural Organic Matter (NOM):

  • Natural organic matter (NOM) is an extremely complex mixture of organic compounds that vary greatly in terms of their physical and chemical characteristics.
  • NOM occurs naturally in the environment and may also be the result of human activities.
  • NOM is found in particulate, colloidal, and dissolved forms in all ground and surface waters, as well as in rainwater.
  • NOM will have significant impacts on drinking water treatment processes aimed at protecting public health. 

Chemical Effervescence:

  • Effervescence is the formation of bubbles of gas in a liquid due to a chemical reaction.

Biochemical Matter:

  • The biochemical matter is defined as matter (or material) that is produced by living things due to chemical reactions.

Biological Load:

  • Biological load defined as the total biodegradable organic matter (material) present in a water sample is called the biological load.
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