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ENVIRONMENTAL ENGINEERING IN CE

Environmental Engineering in CE
Industrial workers working in leather tanning & manufacturing units are prone to suffer from

Blurred vision
Silicosis
Respirtory ailments (e.g. bronchitis)
Skin diseases (e.g. dermatities)

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Environmental Engineering in CE
Which of the following acts as a natural source of air pollution?

Deforestation
None of these
Volcanic eruption
Forest fire

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Environmental Engineering in CE
Which of the following is not a natural source of air pollution?

None of these
Photochemical oxidation of organic matter
Volcanic eruptions and lightening discharges
Biological decay of vegetable matter

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Environmental Engineering in CE
Which of the following is the most detrimental for water used in high pressure boiler?

Silica
Phenol
Turbidity
Dissolved oxygen

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Environmental Engineering in CE
A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm.

6000 to 9000
10000 to 100000
3000 to 6000
1000 to 2000

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