Solved by a verified expert:1. Which of the following scenarios could lead to the phenomenon known as self-ignition?Bacterial action in a haystackLightening striking a houseFaulty wiring in a homeA clock used as a time delay mechanismOverheating of a car engine1. This analytical tool operates on similar principles to liquid chromatography and is gaining use as a tool to analyze explosives.GCCEIRHPTLCMS1. If a fire that is burning with a limited supply of oxygen is suddenly ventilated, this may occur:Incomplete combustionFlame pointFlash pointExplosionFlashback1. Which method of isolating fire residues involves the use of charcoal strips?HeadspaceAdsorptionAbsorptionSolvent extractionGas chromatography1. A paint can has two tubes that can trap accelerants. Air is pumped through one tube into the can; headspace vapors are pulled out through the other tube. What technique does this describe?Solid phase extractionHeadspaceThin Layer ChromatographyAdsorption-ElutionSteam distillation1. High explosives:Have detonation rates of 2,000 to 3,000 fpsTake place at optimal efficiencyRequire the use of an explosives trainsInclude black powder and ANFOPossess a fuel and oxygen that are chemically combined1. Which of the following conditions is not necessary for a fire to occur?HeatOxygenFuelAccerlerantChain reaction1. Select the true statement.A high order explosion may occur due to old, out-of-date explosives.Fragmentation effects are generally the least damaging of the effects of an explosionA vapor trace analyzer is a type of specialized GC that is optimized for explosives analysisBlack powder is comprised of sulfur nitrate, potassium and charcoalExplosions are always more damaging than fires1. A number of characteristics are used to locate the point of origin of a fire. The destruction of a surface due to heat or other factors is called what?Low burningV-patterns burningCharringSpallingMaterial distortion1. Infrared spectrophotometryâ¦Is similar in some ways to HPLCCan differentiate TNT and DNTProvides only a tentative identificationEmploys Greiss reagentsHas problems analyzing explosives due to high temperatures
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