This set of Poultry Products Processing Multiple Choice Questions & Answers (MCQs) focuses on “Processing Water and Wastewater in Poultry Plant – Set 2”.
1. Turbidity is an important component which should be removed from unprocessed water.
a) True
b) False
View Answer
Explanation: Turbidity is an important component which should be removed from unprocessed water. Turbidity is the amount of relative clarity of a waste water. The higher the intensity of scattered light results in the higher turbidity.
2. What is the normal range for turbidity?
a) Below 1NTU
b) 1NTU-2NTU
c) 2NTU-4NTU
d) Above 5NTU
View Answer
Explanation: The WHO (World Health Organization) establishes that the turbidity of drinking water should be below 1 NTU. The NTU is measured with an electronic instrument called a nephelometer. The unprocessed water from poultry industry is normally above 5 NTU.
3. What is the characteristics of wastewater released from poultry industries?
a) Low COD and low BOD
b) High COD and low BOD
c) Low COD and high BOD
d) High COD and high BOD
View Answer
Explanation: The characteristics of wastewater released from poultry industries are High COD (chemical oxygen demand) and high BOD (biochemical oxygen demand). The waste water contains proteins, fats, carbohydrates from poultry, blood, skin and feathers.
4. Comminution is the secondary treatment of process
a) True
b) False
View Answer
Explanation: Comminution is the primary treatment of process. The meat and bones are fed into comminutor which are usually used to produce nanomaterials particles. These are then used as by products.
5. Which of the following is a method of tertiary treatment of water?
a) Screening
b) Comminution
c) Ion exchange
d) Biofiltration
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Explanation: Tertiary treatment involves physical-chemical separation techniques. It includes carbon adsorption, flocculation, advanced filtration, ion exchange, de-chlorination and reverse osmosis. It improves the quality of the water.
6. What is the use of tertiary treatment of water?
a) Removes the nitrogen and phosphorus present in the water
b) Removes the nitrogen present in the water
c) Removes the nitrogen and phosphorus present in the water
d) Removes the nitrogen and calcium present in the water
View Answer
Explanation: The tertiary treatment of waste water removes the nitrogen and phosphorus present in the water. It provides a final treatment stage. This is done prior to discharge of the waste water. This is similar to advanced filtration.
7. What is the process of secondary treatment?
a) It removes about 85 percent of the organic matter in wastewater
b) It removes about 70 percent of the organic matter in wastewater
c) It removes about 65 percent of the organic matter in wastewater
d) It removes about 100 percent of the organic matter in wastewater
View Answer
Explanation: The secondary treatment removes about 85 percent of the organic matter in waste water. It uses microbes for the treating the water. In secondary treatment, they use trickling filter and the activated sludge process.
8. Which of the following are wastewater contaminants?
a) Suspended solids, pathogenic bacteria and nutrients
b) Suspended solids, biodegradable organics and nutrients
c) Suspended solids, biodegradable organics, pathogenic bacteria
d) Suspended solids, biodegradable organics, pathogenic bacteria and nutrients
View Answer
Explanation: Suspended solids, biodegradable organics, pathogenic bacteria and nutrients are some of the waste water contaminants. Wastewater comes from industrial liquid waste and sewage waste and domestic household.
9. Which of the following is removed in sedimentation tanks?
a) Grease
b) Nitrogen
c) Microbes
d) Phosphorous
View Answer
Explanation: Sedimentation tank is used as primary settling tank. It removes grease, oil, fecal solid settle. The floating material rises to the surface. It produces liquid for later biological treatment. Fecal sludge are pumped to sludge treatment plant.
10. Which of the following is called as biological treatment?
a) Primary treatment
b) Secondary treatment
c) Tertiary treatment
d) Final treatment
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Explanation: Secondary treatment is called as biological treatment. It uses both aerobic and anerobic microbes for the treatment. The activated sludge and oxidation ponds are some of the examples of the secondary treatment process.
11. How does pH increase in wastewater?
a) Calcium oxide
b) Sodium carbonate
c) Sodium hydroxide
d) Calcium oxide, sodium carbonate and sodium hydroxide
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Explanation: Some of the common chemicals that are used to increase alkalinity and pH of waste water are calcium oxide, sodium carbonate and sodium hydroxide. The calcium oxide is used as lime slurry. The sodium hydroxide is also called as caustic soda.
12.What is the role of lime in waste water treatment?
a) Raise pH level
b) Decreases pH level
c) No effect on pH
d) Decreases the pH and then increases the pH of water
View Answer
Explanation: Lime softening is a water treatment process to treat waste water. It uses calcium hydroxide/ limewater. It softens water by removing calcium and magnesium ions. It raises its pH level and precipitate the ions which cause hardness.
13. What is the pH value of wastewater?
a) 6-8
b) 3-4
c) 5-7
d) 9-10
View Answer
Explanation: Raw wastewater generally has a pH near neutral value. It varies between 6 and 8. The pH has direct influence on wastewater treatability. Wastewater with a low pH is generally neutralized using sodium hydroxide and lime. Wastewater with a high pH is generally neutralized with sulfuric acid carbon dioxide.
Sanfoundry Global Education & Learning Series – Poultry Products Processing.
To practice all areas of Poultry Products Processing, here is complete set of Multiple Choice Questions and Answers.
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