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Wastewater Characteristics and Treatment Online Exam Quiz

Important questions about Wastewater Characteristics and Treatment. Wastewater Characteristics and Treatment MCQ questions with answers. Wastewater Characteristics and Treatment exam questions and answers for students and interviews.

Which of the following represents the first stage BOD in the following figure?

Options

A : a. ZR

B : b. RL

C : c. ZL

D : d. EP

Which of the following represents the second stage BOD in the following figure?

Options

A : a. LP

B : b. RL

C : c. ZL

D : d. EP

The carbonaceous demand occurs due to oxidation of ______________

Options

A : a. Ammonia

B : b. Sulfur

C : c. Organic matter

D : d. Nitrogen

The nitrogenous demand occurs due to oxidation of ______________

Options

A : a. Ammonia

B : b. Sulfur

C : c. Organic matter

D : d. Nitrogen

Which of the following is correctly matched in the following figure?

Options

A : a. ZR – Carbonaceous demand

B : b. RE – Nitrogenous demand

C : c. EP – Final demand

D : d. ZP – Combined demand

The nitrogenous demand begins after how many days?

Options

A : a. 1

B : b. 2

C : c. 3

D : d. 5

What is yellow curve represents in the following figure?

Options

A : a. Deoxygenation curve

B : b. Reoxygenation curve

C : c. Oxygen sag curve

D : d. Equilibrium concentration of oxygen

Which of the following is represented by the green curve in the following figure?

Options

A : a. Deoxygenation curve

B : b. Reoxygenation curve

C : c. Oxygen sag curve

D : d. Equilibrium concentration of oxygen

The maximum deficiency of dissolved oxygen is represented by ____________

Options

A : a. Dotted blue line

B : b. Green curve

C : c. Yellow curve

D : d. Violet curve

Which of the following represents the oxygen sag curve in the following figure?

Options

A : a. Dotted blue line

B : b. Green curve

C : c. Yellow curve

D : d. Red curve

The oxygen deficit is maximum when?

Options

A : a. Rate of reaeration is 0

B : b. Rate of deoxygenation is 0

C : c. Rate of reaeration equals the rate of deoxygenation

D : d. Rate of reaeration > rate of deoxygenation

When the BOD of wastewater increases, then?

Options

A : a. Rate of reaeration decreases

B : b. Rate of oxygen deficit increases

C : c. Rate of oxygen deficit decreases

D : d. Amount of oxygen in wastewater increases

Rate of aeration is independent of the D.O content of wastewater.

Options

A : a. True

B : b. False

C : c. May be True or False

D : d. Can't Say

Which of the following represents the physical characteristics of water?

Options

A : a. Chloride content

B : b. BOD

C : c. Turbidity

D : d. COD

Which of the following is measured in mg/L?

Options

A : a. Unit weight

B : b. Coefficient of cohesion

C : c. Discharge

D : d. Turbidity

Which of the following instrument is used to measure turbidity?

Options

A : a. Olfactometer

B : b. Turbidity meter

C : c. Colorimeter

D : d. Spectrophotometer

When the sewage becomes stronger, the turbidity of wastewater?

Options

A : a. Increases

B : b. Decreases

C : c. Becomes constant

D : d. Slightly decrease

Which color indicates the fresh sewage?

Options

A : a. Pink

B : b. Red

C : c. Black

D : d. Grey

The color of the septic sewage is __________

Options

A : a. Pink

B : b. Red

C : c. Black

D : d. Grey

The odor in wastewater is measured by __________

Options

A : a. Osmoscope

B : b. Chromatography

C : c. Olfactometer

D : d. Turbidity meter

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