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Environmental Engineering in CE

Environmental Engineering in CE
Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million).

5000
1000
50
2000

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Environmental Engineering in CE
Reinglemann chart is used for the measurement of the

Flue gas temperature
Exhaust gas density
Smoke density from a chimey
Combustibles present in automobile exhaust

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Environmental Engineering in CE
Polyvinyl chloride containers are not suitable for storing

Metallic powder
None of these
Woolen clothes
Foodstuffs

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Environmental Engineering in CE
Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants?

F
SO₂
Hg
NOx

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

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

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

Grinding
Polishing
Machining
Cutting

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