Mock Test
1. In forensic serology, the ABAcard® HemaTrace test is used to detect:
A) Human saliva
B) Human semen
C) Human blood
D) Animal blood
Answer: C) Human blood
Explanation: The ABAcard® HemaTrace is an immunochromatographic test that detects human hemoglobin, confirming the presence of human blood.
2. Which of the following is used in the confirmatory identification of tear stains at a crime scene?
A) Luminol
B) Lactoferrin immunoassay
C) Phenolphthalein test
D) PSA card
Answer: B) Lactoferrin immunoassay
Explanation: Lactoferrin, a protein present in high concentrations in tears, is targeted using immunoassays for confirmatory identification of tear fluid in forensic casework.
3. Which of the following osteometric parameters is most reliable for sex estimation from long bones?
A) Midshaft diameter of humerus
B) Maximum length of ulna
C) Bicondylar width of femur
D) Maximum diameter of femoral head
Answer: D) Maximum diameter of femoral head
Explanation: The femoral head diameter shows significant sexual dimorphism and is a reliable indicator for sex estimation when complete skeletal remains are unavailable.
4. In forensic microbiology, the 'bacterial clock' concept is primarily used for:
A) Identification of bacterial species in wounds
B) Estimating time since death (PMI)
C) Determining cause of septicemia
D) Tracing zoonotic diseases
Answer: B) Estimating time since death (PMI)
Explanation: The 'bacterial clock' relies on postmortem changes in microbial communities to estimate the postmortem interval, especially useful in decomposed remains.
5. In questioned document examination, which method is most suitable for non-invasive detection of obliterated text?
A) Thin layer chromatography
B) Infrared luminescence imaging
C) UV-visible spectrophotometry
D) Microspectrophotometry
Answer: B) Infrared luminescence imaging
Explanation: IR luminescence imaging can reveal obliterated or overwritten texts by detecting differences in ink absorption and emission properties invisible to the naked eye.
6. Which of the following protein markers is most specific to vaginal epithelial cells in sexual assault analysis?
A) Amylase
B) p30 antigen
C) Glycophorin A
D) Cytokeratin 7
Answer: D) Cytokeratin 7
Explanation: Cytokeratin 7 is a biomarker present in vaginal epithelial cells, useful in differentiating vaginal secretions from other bodily fluids in sexual assault cases.
7. In forensic toxicology, the presence of cyanide can be confirmed by the:
A) Prussian blue test
B) Scott test
C) Duquenois-Levine test
D) Marquis test
Answer: A) Prussian blue test
Explanation: The Prussian blue test detects cyanide by forming a blue-colored complex, confirming its presence.
8. Which of the following is a characteristic sign of cyanide poisoning observed at autopsy?
A) Greenish discoloration of tissues
B) Bright red hypostasis
C) Mummification of tissues
D) Extensive clot formation
Answer: B) Bright red hypostasis
Explanation: Cyanide inhibits cytochrome oxidase in mitochondria, causing blood to remain oxygenated, leading to bright red lividity.
9. In forensic ballistics, the term "caliber" refers to:
A) The length of the firearm barrel
B) The diameter of the bullet or bore
C) The weight of the bullet
D) The type of gunpowder used
Answer: B) The diameter of the bullet or bore
Explanation: Caliber denotes the internal diameter of a firearm barrel or the diameter of the bullet it fires.
10. In forensic genetics, mitochondrial DNA analysis is especially useful in:
A) Paternity cases involving male offspring
B) Mixed stain interpretation
C) Degraded or ancient remains
D) Estimating the number of contributors in a mixture
Answer: C) Degraded or ancient remains
Explanation: Mitochondrial DNA, being more abundant than nuclear DNA, is useful in analyzing degraded biological samples, like hair shafts or old bones.
Content Writer: Srishti Dutta
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