Top 250+ Solved Waste Water Treatment MCQ Questions Answer
Q. Which of the following is not commonly used as a filter material in the treatment of water?
a. Sand
b. Anthracite
c. Crushed rock
d. Garnet sand
Q. Which of the following is correct regarding the cheapest filter material used in water treatment?
a. Sand>Anthracite>Garnet sand
b. SandGarnet sand
c. Sand
d. Sand=Anthracite>Garnet sand
Q. The uniformity characteristics of sand expressed in terms of __________
a. Effective size
b. Effective size and uniformity coefficient
c. Uniformity coefficient
d. Mean velocity
Q. ____ represents the size of sand particle such that 10% of particles are finer than this size.
a. D0.1
b. D1
c. D10
d. D100
Q. What is CU in the expression CU= D60/D10 where D60 and D10 are the sizes of particle such that 60%and 10% of the particles are finer than these sizes respectively?
a. Coefficient of compaction
b. Coefficient of consolidation
c. Uniformity coefficient
d. Effective size
Q. The effective size of sand of the slow sand filter is __________
a. 0.1-0.2mm
b. 0.2-0.3mm
c. 0.4-0.7mm
d. 1-2mm
Q. In which process of water softening, ion exchange phenomenon takes place?
a. Lime soda process
b. Zeolite process
c. Boiling
d. Demineralization process
Q. In which process of water softening, the chemicals are added to remove hardness from water?
a. Lime soda process
b. Zeolite process
c. Boiling
d. Demineralization process
Q. Zeolites are complex compound of ____________
a. Aluminium and lime
b. Silica and soda
c. Aluminium, silica and soda
d. Lime and soda
Q. Natural zeolite is mainly processed from ____________
a. White sand
b. Green sand
c. Grey sand
d. Red sand