Which of the following are physical parameters used to determine water…
2023
Which of the following are physical parameters used to determine water quality?
A. pH
B. Temperature
C. Total Suspended Solids (TSS)
D. Hardness
E. Conductivity
Choose the correct answer from the options given below.
Answer: D. B, C, E only — ConceptPhysical water-quality parameters describe directly observable or measurable physical conditions and bulk responses of water. In the convention used…
- A.
A, B, C, D only
- B.
A, B, D, E only
- C.
C, D, E only
- D.
B, C, E only
Show answer & explanation
Correct answer: D
Concept
Physical water-quality parameters describe directly observable or measurable physical conditions and bulk responses of water.
In the convention used here, temperature records thermal state, suspended solids describe particulate matter, and conductivity measures electrical conductance; pH and hardness are treated as chemical characteristics.
Application
A. pH expresses acidity or alkalinity, so it is treated as a chemical characteristic.
B. Temperature records the thermal state of water, so it is a physical parameter.
C. Total Suspended Solids (TSS) quantify suspended particulate matter, so TSS is a physical parameter.
D. Hardness reflects dissolved calcium and magnesium salts, so it is treated as a chemical characteristic.
E. Conductivity measures the ability of water to conduct electric current, so it is a physical parameter.
Cross-check
Selecting only the entries classified as physical gives B, C and E. The alternatives containing A or D mix chemical and physical parameters.
Result
Therefore, B, C and E only is the required set.