One BTU is defined as which of the following?

One BTU is defined as which of the following?

• A. The amount of heat required to raise the temperature of one pound of water by 1°C
• B. The energy required to heat one liter of water by 1°C
• C. The rate at which heat is transferred in a room
• D. The amount of heat required to raise the temperature of one pound of water by 1°F

Answer: (D)

BTU is a unit of energy used in heating and cooling. It is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit, typically at standard pressure. This is why the statement describing energy to raise 1 pound of water by 1°F is the correct description. The other options miss the definition: Celsius or liter units are not the standard for BTU, and describing a rate of heat transfer (like per hour) is not a total amount of heat. For context, 1 BTU is about 1055 joules.

BTU is a unit of energy used in heating and cooling. It is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit, typically at standard pressure. This is why the statement describing energy to raise 1 pound of water by 1°F is the correct description. The other options miss the definition: Celsius or liter units are not the standard for BTU, and describing a rate of heat transfer (like per hour) is not a total amount of heat. For context, 1 BTU is about 1055 joules.