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Environmental Engineering

Environmental Engineering
If the average daily consumption of a city is 100,000 m³, the maximum daily consumption on peak hourly demand will be

150000 m³
180000 m³
270000 m³
100000 m³

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Environmental Engineering
For normal sludge, the value of sludge index for Indian conditions is

0 to 50
350 to 500
150 to 350
50 to 150

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Environmental Engineering
Which of the following causes a decrease in per capita consumption?

Good quality of water
Use of metering system
Better standard of living of the people
Hotter climate

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Environmental Engineering
The biochemical treatment of sewage effluents is essentially a process of

Reduction
Alkalinization
Oxidation
Dehydration

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Environmental Engineering
Hardy cross method of analysis of distribution system (i) Involves successive trials (ii) Takes economic aspects into account (iii) Is time consuming

All are correct
(i) and (ii)
(i) and (iii)
Only (i)

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Environmental Engineering
Air binding phenomena in rapid sand filters occur due to

Higher turbidity in the effluent
Mud ball formation
Excessive negative head
Low temperature

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