1. What is the boiling point of natural gas (the point at which it changes from a liquid to a gaseous state)? (#16-197)
2. What is the boiling point for propane gas? (#16-189)
3. A blue flame is the result of mixing primary air with gas prior to ignition. What is this type of flame referred to as? (#16-201)
4. What is the explosion limits for propane gas? (#16-188)
5. Heat Conduction is: (#16-163)
6. When two 10 microfarad capacitors are connected in parallel, what is the net result? (#16-194)
7. What is the minimum service clearance vertical of a boiler? (#16-90)
8. If 1 cubic foot of natural gas is 1000 Btuh, what is the ratio of excess air? (#16-179)
9. What is the flame speed for propane gas? (#16-184)
10. Gross stack temperature is the flue gas temperature: (#16-91)