One (or more) of the following is (are) True for the Heating value measurement of gaseous fuels (Boys’ calorimeter):a.Lower heating value is measuredb.Higher heating value is measuredc.The system is based on closed system configurationd.Air is used as the oxidizer

The correct answer is:

b. Higher heating value is measured c. The system is based on closed system configuration

Explanation:

a. Lower heating value is not measured in the Boys' calorimeter. The lower heating value (LHV) is the amount of heat released when the products of combustion are cooled to the initial temperature of the reactants, and any water vapor is not condensed. However, the Boys' calorimeter measures the higher heating value.

b. The Boys' calorimeter measures the higher heating value (HHV). The higher heating value is the amount of heat released when the products of combustion are cooled and the water vapor is fully condensed.

c. The Boys' calorimeter is based on a closed system configuration. This means that the system is sealed and no mass is exchanged with the surroundings during the process.

d. Air is not used as the oxidizer in the Boys' calorimeter. Instead, oxygen is used as the oxidizer.