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Environmental Engineering in CE

Environmental Engineering in CE
Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).

Extremely
Very extremely
Moderately
Highly

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Environmental Engineering in CE
Inhalation of silica dust by human being causes

Asphyxiation
Tuberculosis
Shortness of breath
Both B & C

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Environmental Engineering in CE
The widest explosive limit is of __________ , thereby making it the most explosive gas.

Petrol vapor
Hydrogen
Acetylene
Carbon monoxide

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Environmental Engineering in CE
Reingleman chart is used for the evaluation of __________ pollution.

Noise
Water
Radioactive
Air

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

10
45
115
90

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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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