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Environmental Engineering

Environmental Engineering
Average rate of water consumption per head per day as per Indian Standard is

100 liters
200 liters
135 liters
165 liters

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Environmental Engineering
Disinfection of water results in

Complete sterilisation
Removal of turbidity
Removal of hardness
Killing of disease bacteria

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Environmental Engineering
The effect of increasing diameter of sewer on the self cleansing velocity is

To decrease it
Fluctuating
To increase it
Nil

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Environmental Engineering
As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is

None of these
Larger
Smaller
Same

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Environmental Engineering
The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is

Equal to HMD when flowing full
None of these
Greater than HMD when flowing full
Less than HMD when flowing full

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Environmental Engineering
The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is

10920
9800
9500
10100

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