Which of the Following Statements About Vaporization and Steam Is

question 48

Multiple Choice

Which of the following statements about vaporization and steam is MOST accurate?

• A) Steam produced in the upper layer of hot smoke and fire gases may cause the upper layer to expand downward.
• B) Steam produced on contact with hot surfaces is more likely to result in complete vaporization of the fire stream.
• C) Steam produced in the upper layer of hot smoke and fire gases will cause the upper layer to contract toward the ceiling.
• D) Steam produced on contact with hot surfaces has little effect on the total volume of the upper layer of hot smoke and fire gases.

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