The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated.

Environmental Engineering in CE
The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated.

May increase or decrease ; depends on the chemical characteristics of polluted water

Decreases

Increases

Remains constant

May increase or decrease ; depends on the chemical characteristics of polluted water

Decreases

Increases

Remains constant

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Environmental Engineering in CE
Which of the following is not a natural source of air pollution?

Volcanic eruptions and lightening discharges

None of these

Photochemical oxidation of organic matter

Biological decay of vegetable matter

Volcanic eruptions and lightening discharges

None of these

Photochemical oxidation of organic matter

Biological decay of vegetable matter

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Environmental Engineering in CE
Which of the following fine dust removal equipments is the most efficient?

Scrubber

Bag filter

Electrostatic precipitator

Cyclone separator

Scrubber

Bag filter

Electrostatic precipitator

Cyclone separator

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Environmental Engineering in CE
Peroxyacyl nitrate (PAN), a pollutant is found in the

Exhaust of sulphuric acid plant

Flue gas of coal based power plant

Exhaust of nitric acid plant

Automobile exhaust

Exhaust of sulphuric acid plant

Flue gas of coal based power plant

Exhaust of nitric acid plant

Automobile exhaust

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Environmental Engineering in CE
Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.

Ortho-xylene

Coal ash

Potassium cyanide

None of these

Ortho-xylene

Coal ash

Potassium cyanide

None of these

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Environmental Engineering in CE
80% less than 200 mesh size particles are called

Aggregates

Grit

Smoke

Powder

Aggregates

Grit

Smoke

Powder

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Environmental Engineering in CE

Environmental Engineering in CE The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated.

Environmental Engineering in CE Which of the following is not a natural source of air pollution?

Environmental Engineering in CE Which of the following fine dust removal equipments is the most efficient?

Environmental Engineering in CE Peroxyacyl nitrate (PAN), a pollutant is found in the

Environmental Engineering in CE Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.

Environmental Engineering in CE 80% less than 200 mesh size particles are called

Environmental Engineering in CE
The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated.

Environmental Engineering in CE
Which of the following is not a natural source of air pollution?

Environmental Engineering in CE
Which of the following fine dust removal equipments is the most efficient?

Environmental Engineering in CE
Peroxyacyl nitrate (PAN), a pollutant is found in the

Environmental Engineering in CE
Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.

Environmental Engineering in CE
80% less than 200 mesh size particles are called