Wastewater Treatment and Recycling Nptel Week 1 Answers
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Wastewater Treatment and Recycling Nptel Week 1 Answers (July-Dec 2025)
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Question 1. Which of the following is the most dominant constituent of wastewaters:
a) Organic Pollutants
b) Metals and nutrients
c) Pathogens
d) None of these
Question 2. Wastewaters generated from washing machine is a component of:
a) Greywater
b) Yellow water
c) Blackwater
d) Blue water
Question 3. Identify the correct statements regarding potential recoveries from wastewater:
Statement I: Recycling wastewater is a sustainable approach for wastewater management
Statement II: Wastewater must always be treated to meet drinking water standards before reuse or recycling.
a) Statement I is correct, while statement II is incorrect
b) Statement II is correct, while statement I is incorrect
c) Both, statements I and II are correct
d) Both, statements I and II are incorrect
Question 4. Non-point pollution sources are:
a) Easy to monitor
b) Often leads to insignificant cumulative effect
c) Difficult to regulate
d) All of these
Question 5. Which of the following are primarily natural pollutants in water:
a) Sewage discharge
b) Agricultural runoff
c) Arsenic and Fluoride in groundwaters
d) None of these
These are Wastewater Treatment and Recycling Nptel Week 1 Answers
Question 6. Municipal wastewaters may be treated by:
a) Evaporation and condensation techniques
b) Combination of physicochemical and biological units
c) Diluting with freshwater
d) Land disposal for filtration through soil
Question 7. A water contaminant is:
a) A component of water system which is always harmful
b) A component of water system that may or may not create harmful effects
c) A foreign matter in water which is always harmful
d) A foreign matter in water that may or may not create harmful effects
Question 8. Match the type of wastewater with their attributes:
Type of wastewater
(i) Agricultural Runoff
(ii) Industrial Effluents
(iii) Municipal Wastewater
Examples
A. Likely to have many pathogens
B. Often contain chemicals and toxic substances
C. Rich in nutrients
a) (i)-B, (ii)-A, (iii)-C
b) (i)-C, (ii)-A, (iii)-B
c) (i)-C, (ii)-B, (iii)-A
d) (i)-A, (ii)-C, (iii)-B
These are Wastewater Treatment and Recycling Nptel Week 1 Answers
Question 9. Consequence of discharging untreated wastewater into water bodies include:
a) Adverse human health effects
b) Negative environmental impacts
c) Negative economic impacts
d) All of these
Question 10. Which one of the following is not a major issue in wastewater management:
a) Lack of public awareness
b) Lack of suitable technology
c) Lack of financial resources
d) Lack of political will
These are Wastewater Treatment and Recycling Nptel Week 1 Answers