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What is NOT product of complete combustion?
If a flame is giving off smoke, this type of combustion is occurring...
This type of combustion occurs when there is a limited supply of oxygen
Hydrocarbon fuel + oxygen ----> ___+____
The product(s) of complete combustion of any hydrocarbon is/are _________________.
II. carbon dioxide
III. carbon monoxide
I and II
I and III
Incomplete combustion is harmful to humans because it ___________________.
increases the level of sugar in the blood
produces large amounts of carbon dioxide
decreases the amount of sugar in the blood
produces carbon monoxide that reduces the level of oxygen in the blood
Which one of the following is not a fossil fuel?
Why do we burn a fuel?
To have fun
To release energy
To lose energy
To produce carbon dioxide
What does this hazard symbol warn of?
The substance is explosive
The substance burns easily
The substance supplies oxygen to fires
The substance puts out fires
Why should you not add water on burning oil?
It makes the fire explode and spread
It puts the fire out too quickly
Water does not put out fires
It takes too long to put out the fire