Which of the following are physical parameters of water quality? A. Hardness…
2024
Which of the following are physical parameters of water quality?
A. Hardness
B. pH
C. Temperature
D. Turbidity
E. TSS
Answer: A. CDE — ConceptWater-quality parameters describe measurable characteristics of water. Physical parameters are observed through physical state, appearance, or…
- A.
CDE
- B.
ABC
- C.
BCD
- D.
ABE
Show answer & explanation
Correct answer: A
Concept
Water-quality parameters describe measurable characteristics of water. Physical parameters are observed through physical state, appearance, or suspended matter, whereas chemical parameters describe composition or chemical condition.
Temperature, turbidity, and total suspended solids are treated as physical parameters; pH and hardness are treated as chemical parameters.
Application
Parameter | Classification | Basis |
|---|---|---|
Hardness | Chemical | It reflects dissolved calcium and magnesium salts. |
pH | Chemical | It expresses the hydrogen-ion condition of water. |
Temperature | Physical | It records the thermal state of water. |
Turbidity | Physical | It records cloudiness caused by light scattering from suspended particles. |
TSS | Physical | It measures the mass of suspended solid matter. |
Cross-check
Removing the chemical measures—hardness and pH—from the five listed parameters leaves temperature, turbidity, and TSS.
Therefore, the physical set is Temperature, Turbidity, and TSS, represented by CDE.