The specified gravity (or density) of a vapor-air mixture depends upon all the f

Question

The specified gravity (or density) of a vapor-air mixture depends upon all the following expect: Boiling point Ambient temperature the vapor pressure of the liquid at ambient temperature the molecular weight of the liquid the following apply to emergency evacuation: Panic and stampedes during evacuation are a concern Evacuation drills are not needed Routes, secondary routes and meeting places should be standardized Only a Extensive investigations examining human fire fatalities with respect to exposure to toxic atmospheres have shown the primary toxicant to be: Hydrogen cyanide Carbon monoxide Carbon dioxide Hydrogen chloride in fire situations involving a liquid fuel, cooling the fuel will cause the combustion reaction rate to the flame is cooled down the fuel is diluted by the agent the available oxygen is reduced the vaporization rate of the fuel is reduced Which of the following methods should be used for safe selection and use of hand tools? Increase the amount of force required to operate the tool Minimize awkward positions Minimize the use of anthropometric data Increase the amount of repetition Explosions of flammable vapor air mixtures are more intense in the: the upper flammable range the lower flammable range the intermediate region of the flammable range the lower or upper flammable range

Explanation / Answer

82. All of the above

83. Dry pipe system

85. Only a and c

86. Carbon monoxide

88. Increase the amount of repetition

89. The intermediate region of the flammable range: The explosion does not take place with Upper and lower flammable range because, with Upper flammable range with amount of flammable mixture is more but less oxygen. While with lower flammable range the amount of flammable mixture is less than required.

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