Miscellaneous Questions of Forensic Science Set-4
Q1. Which feature is characteristic of an entrance wound produced by a rifled firearm?
a) Everted margins
b) Abrasion collar
c) Multiple tissue bridges
d) Stellate exit wound
Answer: b) Abrasion collar
Explanation:
An abrasion collar results from friction between the bullet and skin during penetration and is a classic
feature of entrance wounds.
Q2. Blackening around a firearm wound is caused by:
a) Burning
b) Unburnt gunpowder
c) Smoke deposition
d) Bullet lubrication
Answer: c) Smoke deposition
Explanation:
Blackening results from soot deposited around the wound and can usually be wiped away.
Q3. Tattooing around a firearm wound is produced by:
a) Flame
b) Smoke
c) Unburnt powder particles
d) Bullet fragments
Answer: c) Unburnt powder particles
Explanation:
Tattooing (stippling) is caused by unburnt powder grains striking and embedding in the skin. Unlike
soot, it cannot be wiped off.
Q4. Which feature is diagnostic of a contact gunshot wound over the skull?
a) Abrasion collar
b) Stellate wound
c) Tattooing
d) Muzzle imprint only
Answer: b) Stellate wound
Explanation:
Gas expansion beneath the scalp tears the skin against the skull, producing a characteristic stellate
wound.
Q5. The grease collar surrounding an entrance wound is formed by:
a) Burnt powder
b) Bullet lubricant and dirt
c) Blood clot
d) Tissue fluid
Answer: b) Bullet lubricant and dirt
Explanation:
The grease collar consists of lubricant, metallic residues, and dirt carried by the bullet.
Q6. Bevelling of bone in firearm injuries helps determine:
a) Bullet calibre
b) Direction of fire
c) Type of weapon
d) Distance of firing
Answer: b) Direction of fire
Explanation:
Entry wounds show internal beveling, whereas exit wounds show external beveling, indicating bullet
direction.
Q7. Which firearm injury feature is LEAST reliable for estimating firing distance?
a) Tattooing
b) Blackening
c) Abrasion collar
d) Burning
Answer: c) Abrasion collar
Explanation:
Abrasion collars occur in almost all entrance wounds regardless of firing distance.
Q8. Which statement regarding shotgun injuries is CORRECT?
a) Pellet spread increases with distance.
b) Wad never enters the body.
c) Tattooing is absent in close-range shots.
d) Pellet spread decreases with distance.
Answer: a) Pellet spread increases with distance.
Explanation:
As distance increases, shotgun pellets disperse progressively, increasing the spread pattern.
Q9. In forensic ballistics, the keyhole defect usually indicates:
a) Contact shot
b) Ricochet bullet striking sideways
c) Exit wound
d) Shotgun injury
Answer: b) Ricochet bullet striking sideways
Explanation:
A bullet striking sideways (yawing) after ricochet produces a characteristic keyhole-shaped defect.
Q10. During medico-legal autopsy of a firearm death, the MOST important specimen for
gunshot residue (GSR) examination is:
a) Hair
b) Nail clippings
c) Swabs from both hands
d) Stomach contents
Answer: c) Swabs from both hands
Explanation:
Gunshot residue is typically collected from the dorsal and palmar surfaces of both hands using swabs
or adhesive stubs. These are analyzed using techniques such as SEM-EDS (Scanning Electron
Microscopy with Energy-Dispersive X-ray Spectroscopy) to detect characteristic particles containing
lead, barium, and antimony. GSR evidence can help determine whether a person discharged or
handled a firearm, although it must be interpreted cautiously because secondary transfer and
environmental contamination are possible.
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