Elevator Mechanic Practice Exam

Question: 1 / 400

What is known as the silent killer?

Asbestos

CTW

Lead paint

Radon

Radon is often referred to as the "silent killer" because it is a colorless, odorless gas that can accumulate in homes and buildings without detection. It is produced naturally from the decay of uranium in soil, rock, and water. When radon is trapped indoors, particularly in low-lying areas like basements, it can reach high levels that pose serious health risks, particularly lung cancer. Because it cannot be seen or smelled, homeowners may be unaware of dangerously high radon levels, leading to prolonged exposure and increased health risks. Regular testing is essential to determine radon levels in indoor environments, making awareness and mitigation practices crucial for safety.

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