MDCAT Chemistry MCQ #663

In sports medicine, ethyl chloride is sprayed on the skin to provide temporary local anesthesia. What physical property allows it to cause this numbing?

MDCAT Chemistry MCQ #663

  1. Question 1

    Q1. In sports medicine, ethyl chloride is sprayed on the skin to provide temporary local anesthesia. What physical property allows it to cause this numbing?

    • A) Low boiling point
    • B) High density
    • C) High solubility in water
    • D) Non-polar nature

    Answer: Low boiling point

    Explanation: Ethyl chloride has a very low boiling point, causing rapid evaporation and cooling. High solubility is tempting but irrelevant to the cooling effect.