5. The thermodynamic property of a system is said to be an intensive property whose value for the entire system __________ the sum of their value for the individual parts of the system.
Correct Answer: partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
10. A closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system.