Which of the Following Is a Liquid at Room Temperature

question 30

Multiple Choice

Which of the following is a liquid at room temperature and atmospheric pressure?

• A) butane
• B) ethane
• C) propane
• D) none of these

---

Definitions:

Petroleum Imports

These refer to the acquisition of crude oil or refined petroleum products from foreign countries.

Comparative Advantage

An economic principle that posits countries, individuals, or entities gain and benefit from trading if they specialize in producing goods and services for which they have a lower opportunity cost.

Comparative Advantage

The expertise of an individual, a corporation, or a sovereign state to create a commodity or a service that bears a lower opportunity cost than that of competing entities.