Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N₂ in contaminated air at which it acts as a natural asphyxant is ≥ __________ percent.

Environmental Engineering in CE
Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N₂ in contaminated air at which it acts as a natural asphyxant is ≥ __________ percent.

84

92

80

88

84

92

80

88

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Environmental Engineering in CE
Maximum permissible residual chlorine in treated water should be __________ mg/litre.

02 to 0.3

5 to 10

0.001 to 0.01

2 to 3

02 to 0.3

5 to 10

0.001 to 0.01

2 to 3

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Environmental Engineering in CE
The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure

Only (i)

Both (i) and (iii)

Both (i) and (ii)

All (i), (ii) and (iii)

Only (i)

Both (i) and (iii)

Both (i) and (ii)

All (i), (ii) and (iii)

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Environmental Engineering in CE
TLV of mercury in potable (drinking) water is about __________ ppm.

0.1

1

0.001

5

0.1

1

0.001

5

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Environmental Engineering in CE
The function of skimming tank in sewage treatment is to remove __________ substances.

Suspended solid

Gritty & inorganic

Dissolved solid

Oil & fatty

Suspended solid

Gritty & inorganic

Dissolved solid

Oil & fatty

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Environmental Engineering in CE
Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.

90

20

120

60

90

20

120

60

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering in CE

Environmental Engineering in CE Maximum permissible residual chlorine in treated water should be __________ mg/litre.

Environmental Engineering in CE The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure

Environmental Engineering in CE TLV of mercury in potable (drinking) water is about __________ ppm.

Environmental Engineering in CE The function of skimming tank in sewage treatment is to remove __________ substances.

Environmental Engineering in CE Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.

Environmental Engineering in CE
Maximum permissible residual chlorine in treated water should be __________ mg/litre.

Environmental Engineering in CE
The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure

Environmental Engineering in CE
TLV of mercury in potable (drinking) water is about __________ ppm.

Environmental Engineering in CE
The function of skimming tank in sewage treatment is to remove __________ substances.

Environmental Engineering in CE
Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.