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Environmental Engineering

Environmental Engineering
The velocity of flow of water in a sedimentation tank is about

5 to 10 cm/sec
15 to 30 cm/minute
15 to 30 cm/hour
15 to 30 cm/sec

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Environmental Engineering
The rate of Alteration of pressure filters is

Equal to that of slow sand filters
Greater than that of rapid sand filters
In between the filtration rate of slow sand filters and rapid sand filters
Less than that of slow sand filters

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Environmental Engineering
The amount of coagulant needed for coagulation of water increases with (i) Increase in turbidity of water (ii) Decrease in turbidity of water (iii) Increase in temperature of water (iv) Decrease in temperature of water The correct answer is

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

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Environmental Engineering
The per capital consumption of a locality is affected by (i) Climatic conditions (ii) Quality of water (iii) Distribution pressure

Both (i) and (ii)
All (i), (ii) and (iii)
Both (i) and (iii)
Only (i)

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Environmental Engineering
A sewer that receives the discharge of a number of house sewers is called

House sewer
Lateral sewer
Intercepting sewer
Sub-main sewer

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Environmental Engineering
Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about

100
50
75
59

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MORE MCQ ON Environmental Engineering

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