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Environmental Engineering in CE

Environmental Engineering in CE
Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.

Cadmium
Mercury
Hydrogen sulphide
Asbestos

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Environmental Engineering in CE
Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by

Lagoons
Radial settling tank (thickener) using coagulant (lime & ferrous sulphate)
Filtration
Biological oxygen pond

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Environmental Engineering in CE
During which of the following operating conditions of an automobile, carbon monoxide content in the exhaust gas is maximum?

Idle running
Cruising
Deaccelaration
Acceleration

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Environmental Engineering in CE
Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels.

145
105
85
125

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Environmental Engineering in CE
Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO₂ in air is __________ ppm.

5
2000
500
1000

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Environmental Engineering in CE
Which of the following is not an air pollutant?

Carcinogens
Metallic powders
Ozone
Pesticides

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MORE MCQ ON Environmental Engineering in CE

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