Which practice adds alkaline material to lakes to neutralize acidity?

• A. Alkalinization
• B. Liming
• C. Capping
• D. Neutralization

Answer: (B)

Liming is the practice of adding lime or other alkaline material to acidic lakes to raise pH and neutralize acidity. When lime dissolves, it releases calcium ions and carbonate or hydroxide ions that react with hydrogen ions in the water, reducing acidity and boosting the water’s buffering capacity. This shift toward a higher, more stable pH also lowers the solubility and toxicity of metals like aluminum, helping aquatic life recover. Other options either describe broader or different actions (for example, capping involves layering material on the lake bed, and neutralization or alkalinization are less specific terms for this remediation practice), so liming best fits the idea of adding an alkaline substance to neutralize lake acidity.