Model Question Paper CE402 Environmental Engineering DIPLOMA IN CIVIL ENGINEERING

Department of Technical Education

DIPLOMA IN CIVIL ENGINEERING

Fourth Semester

Subject: CE402 Environmental Engineering - II

Duration : 3 hours

Max. Marks: 100

Model Question Paper

Note: 1. Question No 1 is compulsory.            2. Answer any two full questions from each of the sections.

Q.1.

a)

Fill in the blanks with appropriate word/s

1x5 = 05

i

The permissible value of domestic waste water BOD is _________

ii

The Waste from bath room and kitchen is termed as ____________

iii

__________are used to remove the Oil and Grease from waste water

iv

__________ are used at places where there is maximum change in gradient

v

__________ is used to burn the solid waste in a closed chamber

b)

Draw a neat sketch of Manhole and label the various parts

5

Section - I

Q.2

a)

Define the following terms

1. Sewer, 2.Invert, 3.Refuse 4.Garbage  5.Sewerage System.

5

b)

What are the factors that affect the rate of flow of sewage ?

3

c)

Determine the diameter of a circular sewer to carry sewage of 100 litres/sec when it flows half full with a slope of 1in 350 using manning's formula

7

Q.3

a)

Name the three sewerage system used to convey the sewage.

3

b)

Explain various types of waste water sampling methods

5

c)

List the various test to be conducted for sewage and their significance

7

Q.4

a)

What are the requirements of an ideal surface drain ?

3

b)

List the advantages and disadvantages of CI sewers.

5

c)

Calculate the quantity of storm water in catchment area of a city

with following data Area = 30,000 hectares

Intensity of rain fall  15mm/hour

Average permeability 0.5 factor

7

Section - II

Q.5

a)

Explain with neat sketch catch basins

5

b)

What are Traps? Explain it functions

5

c)

Explain the construction of Drop manhole

5

Q.6

a)

Explain with sketch trickling filter.

7

b)

Mention the advantages of activated sludge process.

5

c)

List the methods of sludge disposal.

3

Q7

a)

Write a note on recycle of waste water.

5

b)

What are the principles and requirement of house drainage?

5

c)

List the methods of solid disposal.

5

SECTION III

Q.8

a)

Write a note on  disinfection of well water.

5

b)

With neat sketch explain working of bio-gas plant.

7

c)

List the various sanitary fittings adopted for the house drainage.

3

Q.9

a)

List the methods of sludge disposal.

5

b)

Explain the method of incineration process.

5

c)

Name the equipments used for controlling the air pollution.

5

Q.10

a)

What are the effects of air pollution on human beings?

5

b)

Write a note on acid rain.

5

c)

Discuss the effects of noise pollution on human being.

5