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Environmental Engineering in CE

Environmental Engineering in CE
H₂S present in gaseous stream can be removed by adsorption on

Limestone powder
Silica gel
Active carbon
Bog iron

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Environmental Engineering in CE
Which of the following processes is involved in the biochemical treatment of sewage effluents?

Reduction
Dehydration
Oxidation
Fermentation

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Environmental Engineering in CE
As compared to rapid sand filters, slow sand filters give
(i) Slower filtration rate
(ii) Higher filtration rate
(iii) Lesser efficiency in removal of bacteria
(iv) Higher efficiency in removal of bacteria
The correct answer is

(ii) and (iii)
(i) and (ii)
(ii) and (iv)
(i) and (iv)

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Environmental Engineering in CE
Exposure to SO₂ containing chimney gases results in the

Acceleration of corrosion rates of metals
All of these
Increased drying & hardening time of paints
Reduction in strength of leather & cloth

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Environmental Engineering in CE
Presence of a certain minimum quantity of flourine is desirable in potable water to prevent

Corrosion
Water-borne disease
Dental cavities
Scale formation

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Environmental Engineering in CE
TLV of aldrin in public water supply system is about __________ μg/litre.

1097
357
17
0.5

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MORE MCQ ON Environmental Engineering in CE

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