Waste Water Engineering MCQ Questions & Answers

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Each section contains 100 MCQs on Waste Water Engineering .

For providing an Indian type W.C., the R.C.C. slabs in the toilet portion

A) Should be sunk by 20 cm B) Should be kept 20 cm above the adjacent portion C) Should be sunk by 50 cm D) Need not be sunk

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In Chezy’s formula $${\text{V}} = {\text{C}}\sqrt {{\text{rs}}} $$ for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is

A) $${\text{D}}$$ B) $$\frac{{\text{D}}}{2}$$ C) $$\frac{{\text{D}}}{3}$$ D) $$\frac{{\text{D}}}{4}$$ E) $$\frac{{\text{D}}}{5}$$

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Hydraulic mean radius is

A) Mean radius of sewer B) Difference in heads between two points in circular pipes C) Mean of radii in a pipe line of varying cross-sections D) Cross-sectional area/wetted perimeter

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Hazen’s formula $${{\text{V}}_{\text{S}}} = 418\left( {{{\text{G}}_{\text{S}}} - {{\text{G}}_{\text{w}}}} \right){\text{d}}\left( {\frac{{3{\text{T}} + 70}}{{100}}} \right)$$ is used for the settlement velocity of the particles of diameter

A) Less than 0.01 mm B) Less than 0.05 mm C) Less than 0.1 mm D) Greater than 0.1 mm

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The sewer which resists sulphide corrosion, is

A) Brick sewer B) Cast iron sewer C) R.C. sewer D) Lead sewer

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called

A) Inverted syphon B) Depressed sewer C) Sag pipe D) all of these

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

No treatment of the sewage is given if dilution factor is

A) Less than 150 B) Between 150 to 200 C) Between 200 to 300 D) More than 500

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

In septic tanks,

A) Free board of 0.3 m may be provided B) The baffles or tees are extended up to top level of scum C) The clear space between the baffle top and covering slab is about 7.5 cm D) All the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The maximum diameter of sewers adopted in the designs is

A) 1.0 m B) 2.0 m C) 3.0 m D) 4.0 m

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which one of the following part of human body withstands minimum radiation?

A) Thyroid B) Kidneys C) Eyes D) Ovaries/testis

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Waste Water Engineering MCQ Questions & Answers | Civil Engineering