Which of the following occurs when all of the gas is burned and no excess air is left?
A) perfect combustion
B) imperfect combustion
C) incomplete combustion
D) complete combustion
Correct Answer:
Verified
Q9: Which combustion control closes as soon as
Q10: When an appliance is _ vented, fresh
Q11: Which of the following is produced by
Q12: What type of air is supplied through
Q13: Which category of appliances are positive vent
Q15: When does secondary air combine with gas?
A)before
Q16: Which category of appliances are nonpositive vent
Q17: Which category of appliances are nonpositive vent
Q18: Which of the following is a special
Q19: The principal products of combustion of any
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