Question

Therm is a unit of
(A). Heat
(B). Temperature
(C). Thermometry
(D). Mass

Answer 1

Hint: Term therm itself has its meaning. Therm seems like the word thermal, thermodynamics. These words are all related to heat also. It measures heat produced in natural gas. Therm hour = 100000 British thermal unit = 25200 kilocalories =29.3 kilowatt-hours. Usually the therm factor is represented in units of therms per CCF.

Complete step-by-step answer:

A therm is a factor used to convert the volume of gas used to its heat equivalent by natural gas companies. Therm measures the amount of heat energy produced in natural gas. Therefore we can calculate actual energy which has been used.
The therm is a non-international system of unit i.e. Non-SI unit of heat energy which is equal to 1, 00,000 British thermal units. British thermal units can also be expressed as Btu. It is not exactly but approximately, the energy equivalent of burning 100 cubic feet which is equal to 2.83 cubic meters. It is often referred to as 1 CCF of natural gas since natural gas measures volume and not energy.
From the above information we can say that therm is a unit of heat.
Hence option (A) is correct

Additional information:
Therm hour is also a non SI unit of heat energy equal to 100000 British thermal unit.
One thermal is equal to 105.5 megajoules, 25200 Kilocalories or 29.3 kilowatt-hours.
Mathematically

Note: You can remember about them by relating it to pressure. It is not an international system of units. Therms is also the LPG gas measurement unit for energy content. The pressure in LPG gas is measured in kilopascals, bar or pounds per square inch.