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Environmental Engineering in CE

Environmental Engineering in CE
Siderosis is a disease caused by the inhalation of __________ dust.

Iron
None of these
Coal
Silica

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Environmental Engineering in CE
From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.

1
500
50
5

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Environmental Engineering in CE
Thermal pollution due to excessive heat & temperature in the working place causes

High breathing rate
Reduction in working efficiency of manpower
Fatigue
All of these

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Environmental Engineering in CE
Noise level during normal conversation among men is about __________ decibles.

45
115
90
10

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Environmental Engineering in CE
Operating principle of cyclone separator is based on the action of __________ dust particles.

Centrifugal force on
Gravitational force on
Electrostatic force on
Diffusion of

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Environmental Engineering in CE
Pollution by particulate matter emission in the atmosphere does not take place during metal

Grinding
Machining
Cutting
Polishing

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