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Waste Water Engineering - Section 1 (2)

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Waste Water Engineering - Section 1

Waste water engineering is a branch of this engineering and in
the following section you will find the important MCQs related to this field.

9. 

The asbestos cement pipes are generally laid

A. horizontally
B. vertically
C. at an angle of 30°
D. at an angle of 60°.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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10. 

In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept

A. 10.0
B. 5.0
C. 2.0
D. 0.25

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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11. 

For the COD test of sewage, organic matter is oxidised by K2Cr207 in the presence of

A. H2SO4
B. HNO3
C. HCl
D. none of these.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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12. 

Disposal to sewage in large cities, is done in

A. irrigation
B. dilution
C. oxidation
D. putrifaction.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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13. 

For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is

A. cast iron sewers
B. cement concrete sewers
C. glazed bricks sewers
D. stone ware sewers.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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14. 

Flocculated particles do not change their

A. size
B. shape
C. weight
D. none of these.

Answer: Option D

Explanation:

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15. 

Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to

A. initial demand
B. first stage demand
C. carbonaceous demand
D. all of these.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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16. 

The ratio of minimum hourly flow to the average flow of sewage is

A. 1/4
B. 1/3
C. 1/2
D. 3/4

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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