**Question:** Which of the following is not seen in fired cartridge case?

A. Burns
B. Bullet deformation
C. Perforation marks
D. Residue from gunpowder

**Core Concept:** When a fired cartridge case is examined, one can observe various features related to the firing process. These features help in determining the type of firearm, the caliber, and the shooter's characteristics.

**Why the Correct Answer is Right:** In this case, the correct answer (A) is Burns because burned skin is not a direct consequence of a fired cartridge case itself. Burns are caused by the high heat and pressure generated during the firing process, not by the cartridge case.

**Why Each Wrong Option is Incorrect:**

1. Bullet deformation (B): While bullets can deform upon impact or ricochet, this is not a direct consequence of a fired cartridge case.
2. Perforation marks (C): These are related to the bullet entering and exiting the body, not a fired cartridge case.
3. Residue from gunpowder (D): This is a result of the gunpowder left on the cartridge case after firing, indicating the presence of firearm debris.

**Why the Correct Answer is Right:** Burns are a result of the intense heat and pressure generated during the firing process, which leads to tissue damage. A fired cartridge case itself does not cause burns.

**Clinical Pearl:** When examining a firearm-related case, an experienced forensic expert can provide crucial evidence by analyzing the cartridge case, bullet, and other related items. These findings help reconstruct events, determine the type of firearm, and potentially identify the shooter.