The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the

Environmental Engineering in CE
The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the

Ionosphere

Troposphere

Stratosphere

None of these

Ionosphere

Troposphere

Stratosphere

None of these

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Environmental Engineering in CE
Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is

Proportional to the pressure of the gas

Both B and C

Inversely proportional to viscosity of gas

Proportional to the viscosity & density of the gas

Proportional to the pressure of the gas

Both B and C

Inversely proportional to viscosity of gas

Proportional to the viscosity & density of the gas

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Environmental Engineering in CE
Presence of __________ bacteria in water causes disease like typhoid.

Aerobic

Non-pathogenic

Pathogenic

Anaerobic

Aerobic

Non-pathogenic

Pathogenic

Anaerobic

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Environmental Engineering in CE
Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas?

Hydrogen

Acetylene

Ammonia

Carbon monoxide

Hydrogen

Acetylene

Ammonia

Carbon monoxide

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Environmental Engineering in CE
Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of

CFC (chloro fluoro carbon)

SO₂

CO₂

Hydrocarbons

CFC (chloro fluoro carbon)

SO₂

CO₂

Hydrocarbons

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Environmental Engineering in CE
Which of the following pollutants is not emitted during volcanic eruptions?

CO

Hydrocarbons

SO₂

H₂S

CO

Hydrocarbons

SO₂

H₂S

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Environmental Engineering in CE

Environmental Engineering in CE The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the

Environmental Engineering in CE Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is

Environmental Engineering in CE Presence of __________ bacteria in water causes disease like typhoid.

Environmental Engineering in CE Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas?

Environmental Engineering in CE Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of

Environmental Engineering in CE Which of the following pollutants is not emitted during volcanic eruptions?

Environmental Engineering in CE
The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the

Environmental Engineering in CE
Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is

Environmental Engineering in CE
Presence of __________ bacteria in water causes disease like typhoid.

Environmental Engineering in CE
Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas?

Environmental Engineering in CE
Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of

Environmental Engineering in CE
Which of the following pollutants is not emitted during volcanic eruptions?