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Waste Water Engineering

Waste Water Engineering
15 cumecs, the depth d and width are related by For drains up to

B = 0.2 d
B = 0.5 d
d = 0.5 B
d = 0.2 B

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Waste Water Engineering
If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains

Oxygen
Methane
Hydrogen sulphide
Carbon dioxide

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Waste Water Engineering
The maximum diameter of sewers adopted in the designs is

2.0 m
1.0 m
4.0 m
3.0 m

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Waste Water Engineering
The liquid wastes from kitchens, bath rooms and wash basins, is not called

Sullage
Liquid waste
Sewage
None of these

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Waste Water Engineering
For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of

120 cm
160 cm
140 cm
100 cm

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Waste Water Engineering
To maintain aerobic biological activity, the moisture content of the compost mass should be about

0.45
0.55
0.5
0.6

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