Why is heat needed to initiate combustion?
A) Energy is needed to start the fuel-oxygen reaction.
B) Liquids and solids need to be converted to vapors.
C) Neither of the above.
D) Both of the above.
Correct Answer:
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Q43: What typically happens to non-metal free elements
Q44: An atom that has gone from an
Q45: The reduction of any atom ends in
Q46: In an unbalanced chemical equation in which
Q47: What is pyrolysis?
A)The decomposition of a solid
Q49: Vaporization of a liquid fuel to a
Q50: What do all exothermic reactions produce?
A)Heat
B)Light
C)Smoke
D)Fumes
Q51: In an exothermic reaction energy diagram, what
Q52: Endothermic processes always give off heat at
Q53: How does a flashover spread?
A)Across the ceiling
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