PPSCFPSCNTSPakistan govt jobs
- Subject
- Environmental Engineeringcivil-engineering-mcqs › environmental-engineering
- Published
- 17 Jan 2019
- Last updated
- 28 May 2026
Explanation
The safe residual chlorine level in public water systems to effectively control pathogenic bacteria typically ranges from 0.05 to 0.5 ppm. Levels lower than this may be insufficient for disinfection, while higher concentrations can affect water taste and safety.
More Environmental Engineering MCQs
Practice related questions from the same subject.
- 1.Which of the following statements about BOD (Biochemical Oxygen Demand) is accurate?
- 2.When coliform bacteria are detected in a water sample, which coliform tests should be performed?
- 3.What is the term for the equipment used to extract water from its sources?
- 4.Which factors influence the per capita consumption in a given area?
- 5.Assertion (A): Water usage rises as the distribution pressure increases. Reason (R): Elevated distribution pressure leads to greater water loss and wastage. Choose the correct option based on the given coding scheme.
- 6.Which factor leads to a reduction in per capita water consumption?
- 7.Given that a city’s average daily water usage is 100,000 m³, what is the maximum daily consumption expected during the peak hourly demand?
- 8.In population forecasting, how does the arithmetical increase method's estimate generally compare to that of the geometrical increase method?
More in Civil Engineering Mcqs
- Airport Engineering
- Applied Mechanics and Graphic Statics
- Building Materials and Construction
- Construction Planning and Management
- Design of Concrete Structures
- Design of Masonry Structures
- Design of Steel Structures
- Dock and Harbor Engineering
- Elements of Remote Sensing
- Engineering Economy
- Estimating and Costing
- Fluid Mechanics
- Highway Engineering
- Hydraulics and Fluid Mechanics
- Irrigation, Water Resources Engineering and Hydrology
- RCC Structures Design
- Railway Engineering
- Soil Mechanics and Foundation Engineering
- Strength of Materials
- Structural Analysis
- Structural Design Specifications
- Surveying
- Theory of Structures
- Tunnel Engineering
- Waste Water Engineering
- Water Supply Engineering