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Environmental Chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryEnvironmental Chemistry1 Mark
MCQ
Addition of phosphates and nitrates/ fertilizers into water leads to $ ..........$
  • A
    Increased algal growth.
  • ✓
    Nutrient enrichment/ eutrophication.
  • C
    Increased growth of decomposers.
  • D
    Reduced algal growth.
✓

Answer

Correct option: B.
Nutrient enrichment/ eutrophication.
Addition of phosphates and nitrates/fertilizers into water leads to nutrient enrichment which is also called as eutrophication. It is the enrichment of water bodies with excessive nutrients and fertilizers. This is a kind of water pollution, because excessive nutrients result in growth of plants and algae which consume oxygen present.

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