ACT Science Practice Question #1769 (Hard (580)) | Test Citadel
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ACT Science Difficulty: Hard (580)

Digital ACT Science Practice Question #1769

Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.

If an engineer needs to line the bottom of a municipal landfill to prevent toxic leachate from seeping into aquifers, which soil type is best suited? Experiment Context (Hydraulic Conductivity of Soil Columns): Civil engineers packed 50 cm vertical columns with three different soil textures and measured the volume of water percolating through each column in 15 minutes under a constant hydraulic head of 10 cm: Table 5: - Soil Sample A (Coarse Sand): 1,420 mL percolated - Soil Sample B (Sandy Loam): 380 mL percolated - Soil Sample C (Silty Clay): 18 mL percolated
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Landfill liners require lowest permeability (clay).

Masterclass Solution & Distractor Trap Analysis

Landfill liners require impermeable clay (like Soil C) to prevent leachate leakage into groundwater....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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