Q. In GC-MS, what is “SIM” mode?
Answer: Selected Ion Monitoring (increases sensitivity by looking for specific ions).
Q. What is the “Carrier Gas” usually used in Gas Chromatography?
Answer: Helium or Nitrogen (Inert gases).
Q. Which technique is used to determine the age of organic forensic evidence?
Answer: Carbon-14 Dating.
Q. What is “Cold Vapor Atomic Absorption” (CVAA) used to detect?
Answer: Trace amounts of Mercury.
Q. In forensic paint analysis, what does “PDQ” stand for?
Answer: Paint Data Query (An international database for automotive paints).
Q. What is “Differential Extraction” in the context of a rape kit?
Answer: Separating sperm cells from the victim’s epithelial cells to get a clean male DNA profile.
Q. Which bloodstain pattern is created by blood under pressure, such as from a severed artery?
Answer: Arterial Gush / Spurt.
Q. What is “Degraded DNA”?
Answer: DNA that has been broken into small fragments due to heat, humidity, or bacteria.
Q. In DNA analysis, what is a “Stutter Peak”?
Answer: A minor peak that occurs one repeat unit shorter than the main allele peak due to PCR slippage.
Q. What is “P30” (Prostate Specific Antigen)?
Answer: A protein used as a confirmatory marker for the presence of semen.
English