Mock Test Set-8

 

Mock Test 

Q1. What is the role of STRs (Short Tandem Repeats) in forensic DNA analysis?

a) Identification of proteins

b) Examination of gene expression

c) Identification of individuals

d) Analysis of mitochondrial DNA

 

Answer: c) Identification of individuals

Explanation: STRs are highly variable regions of the DNA, used in forensic science for individual identification because they exhibit high variability between people.

 

Q2. Which of the following instruments is used in forensic toxicology for identifying volatile substances?

a) X-ray diffraction

b) Gas Chromatography-Mass Spectrometry (GC-MS)

c) Infrared Spectroscopy

d) Ultraviolet Spectroscopy

 

Answer: b) Gas Chromatography-Mass Spectrometry (GC-MS)

Explanation: GC-MS is the preferred method in forensic toxicology to separate and identify volatile compounds.

 

Q3. In forensic anthropology, which bone is most commonly used to estimate an individual's height?

a) Femur

b) Humerus

c) Skull

d) Pelvis

 

Answer: a) Femur

Explanation: The femur is commonly used to estimate height due to its correlation with overall body length.

 

Q4. What is the primary purpose of using luminol in forensic investigations?

a) To detect gunshot residues

b) To visualize latent fingerprints

c) To identify bloodstains

d) To test for drugs

 

Answer: c) To identify bloodstains

Explanation: Luminol reacts with iron in hemoglobin, causing a blue glow in the presence of blood, even if it has been cleaned.

 

Q5. Which of the following techniques is used to analyze trace elements in forensic samples?

a) Atomic Absorption Spectroscopy (AAS)

b) Thin Layer Chromatography (TLC)

c) Electrophoresis

d) PCR

 

Answer: a) Atomic Absorption Spectroscopy (AAS)

Explanation: AAS is used to detect trace elements in samples by measuring the absorption of light by free atoms.

 

 

Q6. What is the characteristic shape of entrance gunshot wounds?

a) Irregular and larger than the bullet

b) Star-shaped

c) Round or oval with abrasion collar

d) Larger with tissue protrusion

 

Answer: c) Round or oval with abrasion collar

Explanation: Entrance gunshot wounds tend to be round or oval, with an abrasion collar due to the bullet's impact on the skin.

 

Q7. Which of the following techniques is commonly used for the analysis of drugs in forensic science?

a) NMR Spectroscopy

b) Raman Spectroscopy

c) Gas Chromatography

d) IR Spectroscopy

 

Answer: c) Gas Chromatography

Explanation: Gas chromatography is widely used for the separation and analysis of compounds such as drugs in forensic science.

 

Q8. What is the main component of gunpowder residue detected in gunshot residue (GSR) analysis?

a) Potassium nitrate

b) Nitroglycerine

c) Lead, barium, and antimony

d) Phosphorus

 

Answer: c) Lead, barium, and antimony

Explanation: Lead, barium, and antimony are key components detected in GSR analysis to determine if a person has recently fired a gun.

 

Q9. Which method is most suitable for age estimation in forensic anthropology?

a) Dental analysis

b) Hair analysis

c) Handwriting analysis

d) Footprint analysis

 

Answer: a) Dental analysis

Explanation: Dental analysis, including wear patterns and tooth development, is one of the most reliable methods for estimating age.

 

Q10. In toxicology, which organ is primarily responsible for metabolizing drugs and poisons?

a) Brain

b) Kidneys

c) Lungs

d) Liver

 

Answer: d) Liver

Explanation: The liver is the main organ responsible for metabolizing drugs and toxins, making it critical in toxicological examinations.