Water Pollution
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CHXI14:ENVIRONMENTAL CHEMISTRY

318604 Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of

1 Large number of mosquitoes.
2 Increase in the amount of dissolved oxygen.
3 Decrease in the amount of dissolved oxygen in water.
4 Clogging of gills by mud.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318605 Sewage drained into water bodies kill fishes because

1 It increases competition with fishes to dissolved oxygen
2 It removes the competition with fishes to dessolve \(\mathrm{CO}_{2}\)
3 Excessive \(\mathrm{CO}_{2}\) is added in water
4 It gives of a bad smell
CHXI14:ENVIRONMENTAL CHEMISTRY

318606 Water pollution causes

1 Increased deoxygenation and turbidity
2 Decreased turbidity
3 Increased oxygenation
4 Increased photosynthesis
CHXI14:ENVIRONMENTAL CHEMISTRY

318607 Water is often treated with chlorine to

1 remove hardness
2 increase oxygen content
3 kill germs
4 remove suspended particles
CHXI14:ENVIRONMENTAL CHEMISTRY

318608 Eutrophication is caused by

1 Increase nutrient concenteration
2 Petrochemical and fertilizer plant effluents
3 \({\text{NO}}_{\text{3}}^{\text{ - }}\,\,{\text{and}}\,\,{\text{SO}}_{\text{4}}^{{\text{ - 2}}}\) present in acid rains
4 Mine effluents
NEET DIGITAL LIBRARY
CHXI14:ENVIRONMENTAL CHEMISTRY

318604 Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of

1 Large number of mosquitoes.
2 Increase in the amount of dissolved oxygen.
3 Decrease in the amount of dissolved oxygen in water.
4 Clogging of gills by mud.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318605 Sewage drained into water bodies kill fishes because

1 It increases competition with fishes to dissolved oxygen
2 It removes the competition with fishes to dessolve \(\mathrm{CO}_{2}\)
3 Excessive \(\mathrm{CO}_{2}\) is added in water
4 It gives of a bad smell
CHXI14:ENVIRONMENTAL CHEMISTRY

318606 Water pollution causes

1 Increased deoxygenation and turbidity
2 Decreased turbidity
3 Increased oxygenation
4 Increased photosynthesis
CHXI14:ENVIRONMENTAL CHEMISTRY

318607 Water is often treated with chlorine to

1 remove hardness
2 increase oxygen content
3 kill germs
4 remove suspended particles
CHXI14:ENVIRONMENTAL CHEMISTRY

318608 Eutrophication is caused by

1 Increase nutrient concenteration
2 Petrochemical and fertilizer plant effluents
3 \({\text{NO}}_{\text{3}}^{\text{ - }}\,\,{\text{and}}\,\,{\text{SO}}_{\text{4}}^{{\text{ - 2}}}\) present in acid rains
4 Mine effluents
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CHXI14:ENVIRONMENTAL CHEMISTRY

318604 Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of

1 Large number of mosquitoes.
2 Increase in the amount of dissolved oxygen.
3 Decrease in the amount of dissolved oxygen in water.
4 Clogging of gills by mud.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318605 Sewage drained into water bodies kill fishes because

1 It increases competition with fishes to dissolved oxygen
2 It removes the competition with fishes to dessolve \(\mathrm{CO}_{2}\)
3 Excessive \(\mathrm{CO}_{2}\) is added in water
4 It gives of a bad smell
CHXI14:ENVIRONMENTAL CHEMISTRY

318606 Water pollution causes

1 Increased deoxygenation and turbidity
2 Decreased turbidity
3 Increased oxygenation
4 Increased photosynthesis
CHXI14:ENVIRONMENTAL CHEMISTRY

318607 Water is often treated with chlorine to

1 remove hardness
2 increase oxygen content
3 kill germs
4 remove suspended particles
CHXI14:ENVIRONMENTAL CHEMISTRY

318608 Eutrophication is caused by

1 Increase nutrient concenteration
2 Petrochemical and fertilizer plant effluents
3 \({\text{NO}}_{\text{3}}^{\text{ - }}\,\,{\text{and}}\,\,{\text{SO}}_{\text{4}}^{{\text{ - 2}}}\) present in acid rains
4 Mine effluents
For More Updates join with Us
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CHXI14:ENVIRONMENTAL CHEMISTRY

318604 Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of

1 Large number of mosquitoes.
2 Increase in the amount of dissolved oxygen.
3 Decrease in the amount of dissolved oxygen in water.
4 Clogging of gills by mud.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318605 Sewage drained into water bodies kill fishes because

1 It increases competition with fishes to dissolved oxygen
2 It removes the competition with fishes to dessolve \(\mathrm{CO}_{2}\)
3 Excessive \(\mathrm{CO}_{2}\) is added in water
4 It gives of a bad smell
CHXI14:ENVIRONMENTAL CHEMISTRY

318606 Water pollution causes

1 Increased deoxygenation and turbidity
2 Decreased turbidity
3 Increased oxygenation
4 Increased photosynthesis
CHXI14:ENVIRONMENTAL CHEMISTRY

318607 Water is often treated with chlorine to

1 remove hardness
2 increase oxygen content
3 kill germs
4 remove suspended particles
CHXI14:ENVIRONMENTAL CHEMISTRY

318608 Eutrophication is caused by

1 Increase nutrient concenteration
2 Petrochemical and fertilizer plant effluents
3 \({\text{NO}}_{\text{3}}^{\text{ - }}\,\,{\text{and}}\,\,{\text{SO}}_{\text{4}}^{{\text{ - 2}}}\) present in acid rains
4 Mine effluents
NEET DIGITAL LIBRARY
CHXI14:ENVIRONMENTAL CHEMISTRY

318604 Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of

1 Large number of mosquitoes.
2 Increase in the amount of dissolved oxygen.
3 Decrease in the amount of dissolved oxygen in water.
4 Clogging of gills by mud.
NCERT Exemplar
CHXI14:ENVIRONMENTAL CHEMISTRY

318605 Sewage drained into water bodies kill fishes because

1 It increases competition with fishes to dissolved oxygen
2 It removes the competition with fishes to dessolve \(\mathrm{CO}_{2}\)
3 Excessive \(\mathrm{CO}_{2}\) is added in water
4 It gives of a bad smell
CHXI14:ENVIRONMENTAL CHEMISTRY

318606 Water pollution causes

1 Increased deoxygenation and turbidity
2 Decreased turbidity
3 Increased oxygenation
4 Increased photosynthesis
CHXI14:ENVIRONMENTAL CHEMISTRY

318607 Water is often treated with chlorine to

1 remove hardness
2 increase oxygen content
3 kill germs
4 remove suspended particles
CHXI14:ENVIRONMENTAL CHEMISTRY

318608 Eutrophication is caused by

1 Increase nutrient concenteration
2 Petrochemical and fertilizer plant effluents
3 \({\text{NO}}_{\text{3}}^{\text{ - }}\,\,{\text{and}}\,\,{\text{SO}}_{\text{4}}^{{\text{ - 2}}}\) present in acid rains
4 Mine effluents