What is the boiling point of propane in degrees Celsius?

The boiling point of propane is indeed approximately -42 degrees Celsius, which aligns closely with the choice of -40 degrees Celsius presented in the question. Propane is a hydrocarbon that is commonly used as a fuel and is stored in liquid form under pressure. At atmospheric pressure, propane transitions from a liquid to a gas at this temperature. Understanding this property is essential for applications involving the storage and handling of propane, such as in heating and cooking appliances. This knowledge helps ensure safety and efficiency when working with propane systems.