345377 Read the following statements with reference to eutrophication and choose the incorrect option.
I. Water hyacinth, an indigenous species is an indicator of pollution in water bodies.
II. Algal bloom is the rapid and uncontrolled growth of planktonic algae in a water body.
III. Brown coloration of eutrophic water bodies is due to secondary pollutants like methane, hydrogen sulphide and ammonia
IV. Sewage, runoff from fertilised fields and industrial effluents cause nutrient enrichment of water bodies resulting in cultural eutrophication

345378 Statement A :
Dissolved salts such as nitrates, phosphates, and other nutrients, and toxic metal ions and organic compounds are most difficult to remove from water.
Statement B :
It is possible to estimate the amount of non-biodegradable organic matter in sewage water by measuring Biochemical Oxygen Demand (BOD)

345379 Choose the correct pair.

345380 Biological oxygen demand (BOD) is a measure of

345377 Read the following statements with reference to eutrophication and choose the incorrect option.
I. Water hyacinth, an indigenous species is an indicator of pollution in water bodies.
II. Algal bloom is the rapid and uncontrolled growth of planktonic algae in a water body.
III. Brown coloration of eutrophic water bodies is due to secondary pollutants like methane, hydrogen sulphide and ammonia
IV. Sewage, runoff from fertilised fields and industrial effluents cause nutrient enrichment of water bodies resulting in cultural eutrophication

345378 Statement A :
Dissolved salts such as nitrates, phosphates, and other nutrients, and toxic metal ions and organic compounds are most difficult to remove from water.
Statement B :
It is possible to estimate the amount of non-biodegradable organic matter in sewage water by measuring Biochemical Oxygen Demand (BOD)

345379 Choose the correct pair.

345380 Biological oxygen demand (BOD) is a measure of

345377 Read the following statements with reference to eutrophication and choose the incorrect option.
I. Water hyacinth, an indigenous species is an indicator of pollution in water bodies.
II. Algal bloom is the rapid and uncontrolled growth of planktonic algae in a water body.
III. Brown coloration of eutrophic water bodies is due to secondary pollutants like methane, hydrogen sulphide and ammonia
IV. Sewage, runoff from fertilised fields and industrial effluents cause nutrient enrichment of water bodies resulting in cultural eutrophication

345378 Statement A :
Dissolved salts such as nitrates, phosphates, and other nutrients, and toxic metal ions and organic compounds are most difficult to remove from water.
Statement B :
It is possible to estimate the amount of non-biodegradable organic matter in sewage water by measuring Biochemical Oxygen Demand (BOD)

345379 Choose the correct pair.

345380 Biological oxygen demand (BOD) is a measure of

345377 Read the following statements with reference to eutrophication and choose the incorrect option.
I. Water hyacinth, an indigenous species is an indicator of pollution in water bodies.
II. Algal bloom is the rapid and uncontrolled growth of planktonic algae in a water body.
III. Brown coloration of eutrophic water bodies is due to secondary pollutants like methane, hydrogen sulphide and ammonia
IV. Sewage, runoff from fertilised fields and industrial effluents cause nutrient enrichment of water bodies resulting in cultural eutrophication

345378 Statement A :
Dissolved salts such as nitrates, phosphates, and other nutrients, and toxic metal ions and organic compounds are most difficult to remove from water.
Statement B :
It is possible to estimate the amount of non-biodegradable organic matter in sewage water by measuring Biochemical Oxygen Demand (BOD)

345379 Choose the correct pair.

345380 Biological oxygen demand (BOD) is a measure of