Gunpowder residue patterns can be detected by what?
a. The Greiss test
b. Infrared photograph
c. Both a and b
d. Neither a nor b
(Question #2) Which technique of detecting gunshot residues holds the most promise for the immediate future?
a. Infrared spectroscopy
b. Scanning electron microscope (SEM) testing
c. Neutron activation analysis
d. Dermal nitrate test
(Question #3) Chokes are sometimes found on shotguns to constrict the end of the barrel. The speed and distance traveled by pellets fired from a narrow choke is _____ the speed and distance traveled by pellets fired from a shotgun with a wide choke.
a. the same as
b. greater than
c. less than
(Question #4) The dermal nitrate test has fallen into disfavor because of its lack of specificity. Which of the following common materials is not one of the substances that give a misleading positive reaction to this test?
a. Tobacco
b. Chocolate
c. Urine
d. Cosmetics
(Question #5) The likelihood of detecting gunshot residues on swabs taken from living subjects more than six hours after a firing has occurred is _____ the likelihood of detecting gunshot residues within two hours of a firing.
a. the same as
b. less than
c. greater than
(Question #6) Attention on juvenile recidivism rates during aftercare have been sparked by such concerns as:
A. No right to treatment
B. Spiraling institutional costs
C. Increase in restitution cases
D. None of these
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