Questions from Crime and Investigation

Q: 41. The _________ color test reagent turns orange-brown in

41. The _________ color test reagent turns orange-brown in the presence of amphetamines. 42. The Duquenois–Levine test is a valuable color test for _________. 43. The _________ test is a widely used...

Q: 51. The study of the absorption of light by chemical substances

51. The study of the absorption of light by chemical substances is known as _________. 52. An (ultraviolet, infrared) absorption spectrum provides a unique “fingerprint” of a chemical substance. 53....

Q: 1. The most heavily abused drug in the Western world is

1. The most heavily abused drug in the Western world is _________. 2. True or False: Toxicologists are employed only by crime laboratories. _________ 3. The amount of alcohol in the blood (is, is no...

Q: 11. The amount of alcohol exhaled in the _________ is directly

11. The amount of alcohol exhaled in the _________ is directly proportional to the concentration of alcohol in the blood. 12. Alcohol is eliminated from the blood at an average rate of _________ perc...

Q: 21. Failure to add a preservative, such as sodium fluoride

21. Failure to add a preservative, such as sodium fluoride, to blood removed from a living person may lead to a(n) (decline, increase) in alcohol concentration. 22. Most states have established _____...

Q: The following are three possible combinations of DNA characteristics that may be

The following are three possible combinations of DNA characteristics that may be found in an individual’s genetic profile. Using the product rule, rank each of these combinations of DNA characteristic...

Q: 31. Both _________ and _________ tests must be incorporated into the

31. Both _________ and _________ tests must be incorporated into the drug-testing protocol of a toxicology laboratory to ensure the correctness of the laboratory’s conclusions. 32. The gas _________...

Q: 1. The presence of _________ elements in materials provides useful “

1. The presence of _________ elements in materials provides useful “invisible” markers when comparing physical evidence. 2. The proton and electron (are, are not) of approximately equal mass. 3. A p...

Q: 11. A line spectrum of an element (is, is

11. A line spectrum of an element (is, is not) characteristic of the element. 12. Three important subatomic particles of the atom are the _________, _________, and _________. 13. The total number of...

Q: 21. The two most important components of dried paint from the

21. The two most important components of dried paint from the criminalist’s point of view are the _________ and the _________. 22. The most important physical property of paint in a forensic comparis...