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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following is not a secondary air pollutant?

Ozone
Photochemical smog
All of these
Sulphur dioxide

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

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

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Environmental Engineering in CE
Presence of nitrates in water in excess of 50 ppm causes

Tooth decay
Mathenoglobenemia
Asphyxiation
Gastroentetitis

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Environmental Engineering in CE
Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyl and haemoglobin breakdown of some animals, beyond TLV (>50 ppm)

Acts as a green house gas thereby raising earth's temperature
Inhances the green house effect
Causes increase in sea level
Causes asphyxia

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Environmental Engineering in CE
__________ is removed from water by lime-soda process.

Iron and manganese
Permanent hardness
Foul smell and taste
Temporary hardness

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

Volcanic eruption
Forest fire
Deforestation
None of these

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