[Week 1] NPTEL Water and waste water treatment Assignment Answers 2024

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NPTEL Water and waste water treatment Week 1 Assignment Answers 2024

1. Which of the following are water borne diseases?

  • Cholera
  • Asthma 
  • Influenza
  •  Typhoid 
Answer :- 

2. In the figure below, the course of a river is shown. As it passes through the different areas, it accumulates different types of contaminants.


Match the locations A, B, C shown in the figure with the probable contaminants that may be present.
WWT Ass%201.Q2.II

  • A-III, B-II, C-I
  • A-II, B-III, C-I
  • A-I, B-III, C-II
  • A-II, B-I, C-III 
Answer :- 

3. Adequate wastewater treatment can contribute to achieving which of the following UN Sustainable Development Goals (SDGs)?

  • SDG 11 – Sustainable Cities and communities 
  • SDG 6 – Clean water and sanitation
  • SDG 4 – Quality Education
  • SDG 3 – Good health and well-being
Answer :- 

4. Hardness in water causes

  • Joint related issues
  • Digestive issues
  • Fluorosis
  • Cholera
Answer :- 

5. Groundwater of a tier II town was found to be contaminated with ‘fecal coliforms’. What may be the possible reason for this?

  • Fecal Coliforms are naturally occurring in soil
  • Rainwater infiltration
  • Leaching of sewage from septic tanks collecting fecal waste from individual households
  • Infiltration from irrigated agricultural lands
Answer :- 

6. Which type of reactor is a ‘closed system’ where the concentration changes only due to reaction?

  • Batch reactor
  • Continuously stirred tank reactor (CSTR)
  • Plug flow reactor
  • All of the above
Answer :- 

7. Advection is bulk movement of fluid in one direction.

  • True
  • False
Answer :- 

8. In the image below, each graph depicts a type of mass transport. Choose the correct option.

WWT Ass%201.Q8

  • Graph 1: Advection and diffusion, Graph 2: Diffusion, Graph 3: Advection
  • Graph 1: Advection and diffusion, Graph 2: Advection, Graph 3: Diffusion
  • Graph 1: Diffusion, Graph 2: Advection, Graph 3: Advection and diffusion
  • Graph 1: Advection, Graph 2: Diffusion, Graph 3: Advection and diffusion
Answer :- 

9. Equalization of the influent flow in a wastewater treatment plant is done to prevent shock loading.

  • True
  • False
Answer :- 

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