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Environmental Engineering

Environmental Engineering
As compared to cast iron pipes, steel pipes are

Heavier
Costlier
Stronger
Less susceptible to corrosion

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Environmental Engineering
The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle, is

Cast iron
Reinforced cement concrete
Steel
Copper

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Environmental Engineering
If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is

1000
4000
1,00,000
4,00,000

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

Smaller
None of these
Same
Larger

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Environmental Engineering
The main disadvantage of oxidation pond is that

BOD removal is very low
Large area is required for construction
Maintenance and operation cost are high
None of these

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Environmental Engineering
Sewerage system is usually designed for

28 years
27 years
26 years
25 years

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MORE MCQ ON Environmental Engineering

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