Construction Health and Safety Technician (CHST) 2026 – 400 Free Practice Questions to Pass the Exam

Hexane is known to cause damage to the brain's motor functions, particularly due to its neurotoxic effects when individuals are exposed to high concentrations over time. The mechanism of hexane's toxicity is related to the metabolic byproducts produced from its breakdown, which can affect the nervous system, leading to a condition known as peripheral neuropathy. This neuropathy can impair motor coordination and overall motor function, resulting in challenges with movement and physical tasks.

In comparison, while methanol can have serious toxic effects, especially leading to metabolic acidosis and visual impairment, its primary risk is not directly linked to motor function damage. Sodium nitrate, commonly used as a preservative, does not have a direct correlation with neurotoxicity related to motor functions. Hydrogen sulfide is known for causing central nervous system distress, but its effects are more acute and primarily related to respiratory failure than chronic motor function impairment. Therefore, hexane stands out as the compound primarily associated with long-term motor function damage due to its specific neurotoxic properties.