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Environmental Engineering in CE

Environmental Engineering in CE
Exposure to chemicals having carcinogenic properties cause

Cancer
Asthma
Dermatitis (skin disorder)
Asphyxiation (suffocation)

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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
500
1000
2000

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Environmental Engineering in CE
Inorganic impurities causing water pollution is

Salts of metals
Carbohydrates
Protein
Fats

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Environmental Engineering in CE
Brown spots in fabrics will be caused by washing with water containing large amount of .

Iodine
Zinc
Bromine
Iron

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Environmental Engineering in CE
Which of the following is not a source of ozone emission in the atmosphere?

Refrigerators
Dermatological photo-therapy equipments
Xerox machines
High voltage electrical equipments

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Environmental Engineering in CE
The main industrial source of emission of hydrogen sulphide air pollutant is

Petroleum refineries
Pulp and paper plant
Metallurgical roasting & smelting plant
Coal based thermal power plants

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