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Environmental Engineering in CE

Environmental Engineering in CE
Tolerable limit of nitrogen oxides in air is __________ ppm.

0.1
1
25
5

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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
Fatigue
All of these
High breathing rate

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Environmental Engineering in CE
Main pollutants released from iron & steel industry is

H₂S, NO & SO₃
CO₂, H₂S & NO₂
CO, CO₂ & SO₂
SO₃, NO₂ & CO₂

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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.

1000
500
2000
5

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Environmental Engineering in CE
Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.

100-200
100-1000
10-100

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Environmental Engineering in CE
Persons working in cement plants and limestone quarries are more prone to disease like

Silicosis
Flourosis (bone disease)
Cancer
Asthma

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MORE MCQ ON Environmental Engineering in CE

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