Mock Test
1. In forensic DNA analysis, the term "stutter peaks" refers to:
A) Peaks resulting from contamination
B) Artifacts due to PCR amplification slippage
C) Peaks indicating heteroplasmy in mtDNA
D) Peaks caused by degraded DNA samples
Answer: B) Artifacts due to PCR amplification slippage
Explanation: Stutter peaks are minor peaks that appear one repeat unit shorter or longer than the true allele peak, often due to slippage during PCR amplification.
2. The "Puppe's Rule" is applied in forensic anthropology to determine:
A) The sequence of cranial injuries
B) The age at death
C) The sex of the individual
D) The stature estimation
Answer: A) The sequence of cranial injuries
Explanation: Puppe's Rule helps in determining the order of multiple cranial fractures by analyzing fracture lines and their intersections.
3. In forensic fiber analysis, the cross-section of synthetic fibers can best be observed using:
A) Gas Chromatography
B) Scanning Electron Microscopy (SEM)
C) Fourier Transform Infrared Spectroscopy (FTIR)
D) Polarizing Light Microscopy
Answer: D) Polarizing Light Microscopy
Explanation: Cross-sectional morphology of synthetic fibers is best visualized using polarizing light microscopy, which reveals birefringence and structural characteristics helpful for comparison.
4. In forensic chemistry, the ‘TLC-Rf value’ of a compound is:
A) Always greater than 1
B) A ratio of the spot diameter to the solvent front
C) A constant for a compound under fixed conditions
D) A measure of compound's refractive index
Answer: C) A constant for a compound under fixed conditions
Explanation: The Rf (retention factor) value is calculated as the ratio of the distance moved by a compound to the solvent front, remaining constant under identical conditions (same solvent, stationary phase).
5. In forensic ballistics, "rifling" refers to:
A) The caliber of the bullet
B) The spiral grooves inside a firearm barrel
C) The type of gunpowder used
D) The trajectory of a bullet
Answer: B) The spiral grooves inside a firearm barrel
Explanation: Rifling consists of spiral grooves cut into the barrel of a firearm to impart a spin to the bullet, stabilizing its flight.
6. Which technique allows rapid separation of ions based on their migration through a medium under an electric field?
A) Capillary Electrophoresis
B) TLC
C) Gas Chromatography
D) Mass Spectrometry
Answer: A) Capillary Electrophoresis
Explanation: Capillary Electrophoresis is a high-resolution separation technique for ions, widely used in forensic DNA and toxicology applications due to its speed and precision.
7. In the context of forensic anthropology, the cephalic index is used to determine:
A) Age at death
B) Sex of the individual
C) Ancestry or racial origin
D) Stature estimation
Answer: C) Ancestry or racial origin
Explanation: The cephalic index (head width to length ratio) helps in assessing ancestral background.
8. In forensic toxicology, which technique is most suitable for quantifying volatile organic compounds in biological samples?
A) UV-Vis Spectroscopy
B) FTIR
C) Headspace GC-MS
D) SEM-EDS
Answer: C) Headspace GC-MS
Explanation: Headspace Gas Chromatography-Mass Spectrometry (GC-MS) is preferred for volatile analytes like alcohols and solvents in blood, as it minimizes matrix effects and preserves sample integrity.
9. In forensic toxicology, the Dille-Koppanyi test is used to detect:
A) Barbiturates
B) Amphetamines
C) Cannabinoids
D) Cocaine
Answer: A) Barbiturates
Explanation: The Dille-Koppanyi test is a colorimetric test specific for detecting barbiturates in a sample.
10. The controlled substance "Lysergic acid diethylamide" (LSD) is classified under which schedule of the NDPS Act in India?
A) Schedule I
B) Schedule II
C) Schedule III
D) Schedule IV
Answer: A) Schedule I
Explanation: LSD is listed under Schedule I, indicating it has a high potential for abuse and no accepted medical use in India.
Content Writer:- Srishti Dutta
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