GIS Applications MCQ with answer and solution

Concept

Landfill Site Selection Criteria

Formula

N/A

Step-by-step solution

1. Review the question regarding the most critical datasets for environmental safety in landfill site selection using Geoinformatics. 2. Identify that hydrogeology, soil permeability, and proximity to water bodies are key factors in preventing leachate contamination of groundwater and surface water. 3. Compare the given options and select Option (b) as the correct choice.

Explanation

Hydrogeology, soil permeability, and proximity to water bodies directly determine how easily toxic liquid (leachate) from a landfill can seep into the ground and contaminate surrounding drinking water and aquatic ecosystems. Monitoring these subsurface and water-related factors is the most essential requirement for ensuring environmental safety and preventing water pollution.

Shortcut

To remember the most critical datasets for landfill environmental safety, use the mnemonic "HSP" (Hydrogeology, Soil permeability, Proximity to water): - Hydrogeology: Prevents groundwater contamination from leachate. - Soil Permeability: Ensures low seepage of toxic fluids into the ground. - Proximity to Water: Protects surface water bodies from runoff pollution.

Common mistake

A common mistake is selecting option A by focusing purely on general urban planning factors like population density and traffic volume. While these factors matter for site logistics, students often overlook that hydrogeology and soil permeability are the most critical parameters for environmental safety to prevent toxic leachate from contaminating groundwater and nearby water sources.