Kingdom of Saudi Arabia
Ministry of Higher Education
Majmaah University
College of Engineering
Quiz-1
Student Name: _____________________________________________________
Academic Number:_________________________________________________
Academic Year:
1433-1434
Semester:
2
Instructor:
Ziaur Rehman
Department:
Civil Engineering
Course Title:
Water supply and
sewage Engineering
Course Number:
CE 362
Fill in the blanks:
(0.5x10=5)
1. Calculate the BOD of the following data
S.No.
1.
Sample volume in
300 ml BOD bottle
10 (ml)
D.O. initial (mg/l)
D.O. final (mg/l)
9.7
5.7
2. Water Quality Parameters are
(i)
Physical parameter
(ii)
………….……………….. and
(iii)
……………………………
3. TDS (mg/l) = E.C. (mS/cm) x ………..
4. Physical parameter defines those characteristics of water that respond to the sense of
………………………, ……………………….. , taste or smell.
5. Pure water is colourless, but water in nature is often by foreign substances. True colour due
to………………………………………after removing suspended solids.
6. A pH value of 7 in neutral; a pH ……………….acidic and pH …………….. alkaline.
7. Hardness is defined as the total concentration of ……………………………… and
……………………………. ions
8. Pathogens are those organisms capable of infecting or of transmitting disease to ……………….
9. Write the distribution of suspended solid.