Question

Why do we feel cool when a doctor
apply spirit at the side of injecting
medicine by a syringe?​

Answer 1

1. Question⇒   Why do we feel cool when a doctor  apply spirit at the side of injecting  medicine by a syringe?​

Explanation:

• Isopropyl alcohol has a low boiling point and is rather volatile, meaning that even at room temperature it will evaporate fairly quickly.
• This evaporation requires energy, and the result is that your skin feels cool as the alcohol evaporates away.  This is, by the way, the same concept by which sweating functions : as your sweat evaporates, it carries heat away and cools you down.  Due to the higher volatility of alcohol, however, you notice the cooling effect much more readily.

Answer 2

Answer:

because the spirit has a low boiling point so it evaporates easily

Explanation:

as we know evaporation causes cooling so when the spirit touches our skin it evaporates quickly and make us feel cool