Question

Choose the correct statements: A. Both hardness and Alkalinity are measured in units of mg/L as CaCO$_3$ B. Enrichment of C and S are responsible for eutrophication of lakes C. Alkalinity is a base neutralizing capacity D. Dissolved ions increases salinity of water E. Turbidity is a measure of transparency of water

• A. B, C and D only
• B. A, C, D and E only
• C. A, D and E only
• D. B, C, D and E only

Hint:

Remember that eutrophication is primarily caused by nitrogen (N) and phosphorus (P), not carbon (C) and sulfur (S).

Answer 1

The Correct Option is B

Step 1: Concept
Water quality parameters: units, eutrophication, alkalinity, salinity, and turbidity.

Step 2: Meaning
Understanding the definitions and applications of various water quality parameters is essential for environmental science.

Step 3: Analysis
A) Both hardness and alkalinity are expressed in mg/L as CaCO$_3$ --- Correct.
B) Eutrophication is caused by enrichment of nitrogen (N) and phosphorus (P), not C and S --- Incorrect.
C) Alkalinity measures the buffering capacity against acids (base neutralizing capacity) --- Correct.
D) Dissolved ions directly contribute to higher salinity --- Correct.
E) Turbidity measures the cloudiness/transparency of water --- Correct.

Step 4: Conclusion
Statements A, C, D, and E are correct. Final Answer: (B)