Rank refers to the ___ of a coal

Grade refers to the __ of a coal

Air supplied to the burner that is more than the theoretical amount needed to burn a fuel is ___ air

when the temperature of fuel oil increases, its viscosity ___

the lowest temperature at which fuel oil will flow is its ___ point

fuel oil with a low flash point would be ___

A ___ fire extinguisher is the correct type of extinguisher to use on fuel oil fires

Air used to atomize fuel oil is ___ air

Air that controls how completely a fuel is burned is __ air

___ combustion is when all the fuel is burned using only the theoretical amount of air

___ combustion is when all the fuel is burned using the minimum amount of excess air

gases of combustion that cool on contact with the boiler heating surface before combustion is completed cause ___

air contains approximately ___% oxygen

No. ___ fuel has the lowest specific gravity

soot and smoke are the result of ___ combustion

Carbon monoxide in the flue gas indicates ___.

The lowest temperature at which fuel oil will burn continuously when exposed to an open flame is it's ___ point

___ must be heated to reach the required temperature for combustion

Higher numbered fuel oils produce ___ lower numbered fuel oils

The viscosity of a fuel is expressed in ___

An ultimate analysis of coal provides information regarding ___

___ is biological material used as a renewable energy fuel

___ will support combustion but is not itself combustible.

The letter M in the acronym MATT stands for ___.