Top 250+ Solved Waste Water Treatment MCQ Questions Answer
Q. ________ combines aeration basin and secondary clarifier into single unit.
a. Primary clarifier
b. Aerobic unit
c. Sequential batch reactor
d. Secondary clarifier
Q. What does SBR stand for?
a. Secondary batch reactor
b. Sequential biological reactor
c. Secondary biological reactor
d. Sequential batch reactor
Q. When the aeration system shuts off, the basin begins to perform as a ______
a. Primary clarifier
b. Secondary clarifier
c. Anaerobic unit
d. Aeration unit
Q. _______ provides the dual purpose of providing DO and mixing of the mixed liquor and wastewater.
a. Flocculation
b. Aeration
c. Sedimentation
d. Clarification
Q. Ion-exchange resin is ____________
a. Linear
b. Low molecular weight
c. Organic polymer with porous structure
d. Soluble
Q. Which of the following ion get released from the cation exchange column?
a. H+
b. Na+
c. K+
d. Ca+2
Q. Which of the following ion get released from the anion exchange column?
a. CO3-2
b. OH–
c. Cl–
d. SO4-2
Q. Ion-free water coming out from the exchanger is known as ____________
a. Potable water
b. Disinfected water
c. Coagulated water
d. Demineralised water
Q. Which of the following statement is incorrect about the demineralised water?
a. It is as pure as distilled water
b. It is very good for use in high pressure boilers
c. It is fit for domestic use
d. It can be made either by distillation or by using cation and anion exchangers
Q. The exhausted cation exchange column is regenerated by passing a solution of ____________
a. Dil. HCl
b. Dil. NaCl
c. Con HCl
d. Conc. NaCl
Q. The exhausted anion exchange column is regenerated by passing a solution of ____________
a. Dil. KOH
b. Conc. KOH
c. Con NaOH
d. Dil. NaOH
Q. In ion-exchange process, the capital cost is _________ and the operational expenses are______________
a. Low, high
b. High, low
c. High, high
d. Low, low
Q. The residual hardness in ion-exchange process is ____________
a. 0-2 ppm
b. 5-10 ppm
c. 10-15 ppm
d. 20-30 ppm