NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pressure from the expanding gun powder
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Firing pin pushes it down the barrel
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The trigger manually moves the bullet into the barrel
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Pressure from the ignited primer powder
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Detailed explanation-1: -When the firing pin in a firearm strikes the primer, it ignites the powder inside the case, creating an explosion that generates a large amount of pressure, often exceeding 50, 000 PSI (344.7 MPa). This pressure in turn pushes the bullet out of the case mouth and into the barrel.
Detailed explanation-2: -A residue of lead, primer materials, carbon, and other materials from the barrel that are transferred onto the outermost surface of the target by the bullet as it passes through. A tapered constriction of a shotgun barrel’s bore at the muzzle end. The resulting impact of the cartridge case with the ejector.
Detailed explanation-3: -PURPOSE OF RIFLINGS – is to impart a motion of rotation to a bullet during its passage inside the barrel in order to insure gyroscopic stability in the flight, and so that it will travel nose-on towards the target.