Identification — MCQs
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According to legal definitions, for how many years must a person be missing and unseen by relatives to be declared dead?
The Trotter and Glesser formula is used for estimating what?
Which of the following best describes the shape of the pelvic brim in males?
What is the normal craniofacial angle in adults?
Tattooing in an old decomposed body can be visualized by all methods except?
Which among the following is the most common type of finger impression?
What is the most common type of fingerprint pattern?
Which among the following is relatively not a method of identification in living individuals?
All of the following are true about the Kevorkian sign, except?
Which of the following is associated with 'Spalding sign'?
Identification Indian Medical PG Practice Questions and MCQs
Question 51: According to legal definitions, for how many years must a person be missing and unseen by relatives to be declared dead?
- A. 3 years
- B. 7 years (Correct Answer)
- C. 10 years
- D. 12 years
Explanation: ### Explanation The correct answer is **7 years**. This is based on the legal principle of **Presumption of Death**, which is governed by the **Indian Evidence Act (IEA)**. **1. Why 7 years is correct:** Under **Section 108 of the Indian Evidence Act**, if a person has not been heard of for seven years by those who would naturally have heard of them if they were alive (such as relatives or close associates), the burden of proving that the person is alive shifts to the person who affirms it. In the absence of such proof, the law presumes the person to be dead. This is often referred to as "civil death." **2. Why other options are incorrect:** * **3 years (Option A):** This duration is typically associated with certain statutes of limitation for civil suits but has no standing in the presumption of death. * **10 years (Option C):** There is no provision under Indian law that uses a 10-year window for declaring a person dead. * **12 years (Option D):** This period is relevant for "Adverse Possession" of property under the Limitation Act but is not the standard for the presumption of life or death. **3. High-Yield Facts for NEET-PG:** * **Section 107 IEA (Presumption of Life):** If a person is shown to have been alive within the last **30 years**, the law presumes they are still alive. The burden of proof lies on the person claiming they are dead. * **Section 108 IEA (Presumption of Death):** This is a proviso to Section 107. If the person is missing for **7 years**, the presumption of life is replaced by the presumption of death. * **Note:** The law presumes the *fact* of death after 7 years, but it does **not** presume the exact *time* or *date* of death. The person claiming a specific date of death must prove it with evidence.
Question 52: The Trotter and Glesser formula is used for estimating what?
- A. Cephalic index
- B. Stature (Correct Answer)
- C. Race
- D. Age
Explanation: ### Explanation **Correct Answer: B. Stature** The **Trotter and Glesser formula** is a standardized mathematical method used in forensic anthropology to estimate the **stature (height)** of an individual from the measurements of long bones. **Why it is correct:** Stature estimation is based on the principle that there is a linear correlation between the length of long bones and the total height of an individual. Trotter and Glesser (1952, 1958) developed regression equations for different bones (femur, tibia, fibula, humerus, radius, and ulna). The **femur** is considered the most reliable bone for this purpose. These formulas are population-specific, accounting for variations in sex and ethnicity. **Why other options are incorrect:** * **A. Cephalic Index:** This is used for **Race** determination and is calculated as *(Maximum Breadth of Skull / Maximum Length of Skull) × 100*. * **C. Race:** While Trotter and Glesser formulas use race as a variable, race itself is determined by morphological features of the skull (e.g., nasal index) or pelvis. * **D. Age:** Age estimation in forensics primarily relies on dentition (Gustafson’s method), ossification centers (X-rays), and the closure of cranial sutures (Lendahl’s method). **High-Yield NEET-PG Pearls:** * **Multiplication Factor (Pearson’s Formula):** Another method for stature where the length of a bone is multiplied by a specific factor (e.g., Femur × 3.7, Humerus × 5.3). * **Most accurate bone for stature:** Femur. * **Most accurate bone for sex:** Pelvis (followed by Skull). * **Most accurate bone for age:** Teeth (in children) and Pubic Symphysis (in adults via Suchey-Brooks method). * **Rule of Hasse:** Used to estimate the age of a fetus based on its length.
Question 53: Which of the following best describes the shape of the pelvic brim in males?
- A. Circular
- B. Elliptical
- C. More spacious
- D. Heart shaped (Correct Answer)
Explanation: The pelvis is the most reliable bone for sex determination in adults (95% accuracy). The shape of the **pelvic brim (inlet)** is a primary distinguishing feature between male and female skeletons. ### **Explanation of the Correct Answer** **D. Heart shaped:** In males (Android pelvis), the pelvic brim is typically **heart-shaped**. This is due to the prominent **sacral promontory** which projects forward and the relatively narrow alae of the sacrum, indenting the posterior aspect of the inlet. ### **Analysis of Incorrect Options** * **A. Circular:** This describes the pelvic brim in **females (Gynaecoid pelvis)**. A circular or wide-oval inlet is an evolutionary adaptation to facilitate the passage of the fetal head during childbirth. * **B. Elliptical:** An anteroposteriorly elongated elliptical inlet is characteristic of the **Anthropoid pelvis** (found in about 25% of females and 50% of males). A transversely elliptical inlet is seen in the **Platypelloid pelvis**. * **C. More spacious:** This is a characteristic of the **female pelvis**. The female pelvis is wider, shallower, and more spacious to accommodate pregnancy, whereas the male pelvis is heavier, deeper, and narrower. ### **High-Yield NEET-PG Pearls** * **Sub-pubic Angle:** The most reliable single feature for sexing the pelvis. It is **<90° (V-shaped)** in males and **>90° (U-shaped)** in females. * **Sciatic Notch:** Narrow in males (approx. 25°); wide in females (approx. 75°). * **Pre-auricular Sulcus:** Deep and well-marked in females; absent or shallow in males. * **Chilotic Index:** (Sacral width / Pelvic brim width) × 100. It is higher in females. * **Washburn’s Index (Ischio-pubic Index):** The most reliable metrical method; it is significantly higher in females.
Question 54: What is the normal craniofacial angle in adults?
- A. 110 degrees
- B. 120 degrees
- C. 130 degrees (Correct Answer)
- D. 140 degrees
Explanation: **Explanation:** The **craniofacial angle** (also known as the facial angle) is a metric used in forensic anthropology and orthodontics to assess the profile of the skull and determine the degree of prognathism (protrusion of the jaw). It is measured by the intersection of the line connecting the **nasion to the sella turcica** and the line from the **nasion to the gnathion** (or the Frankfort horizontal plane depending on the specific method used). 1. **Why 130 degrees is correct:** In a normal, orthognathic adult skull, the craniofacial angle typically measures approximately **130 degrees**. This value represents the standard anatomical alignment where the face sits vertically under the cranium. 2. **Incorrect Options:** * **110 and 120 degrees:** These smaller angles indicate a more acute relationship between the cranium and the face, often seen in cases of significant **prognathism** (forward projection of the maxilla/mandible). * **140 degrees:** This larger angle would indicate a more **retrognathic** profile (receding jaw), which is outside the standard normal range for a healthy adult. **High-Yield Clinical Pearls for NEET-PG:** * **Cephalic Index:** The most common index for skull identification. Formula: $(Maximum\ Breadth / Maximum\ Length) \times 100$. * *Dolichocephalic (Long headed):* < 75 (Common in Aryans/Africans). * *Mesaticephalic (Medium):* 75–80 (Common in Europeans/Chinese). * *Brachycephalic (Short/Broad):* > 80 (Common in Mongolians). * **Facial Index:** Used to differentiate races; it is the ratio of facial height to bizygomatic width. * **Prognathism:** Most marked in the Negroid race, while Caucasoids are generally orthognathic.
Question 55: Tattooing in an old decomposed body can be visualized by all methods except?
- A. 3% H2O2
- B. Gamma rays (Correct Answer)
- C. Infrared photography
- D. Examination with a magnifying lens
Explanation: **Explanation:** In forensic practice, identifying tattoos in decomposed bodies is crucial for personal identification. As decomposition progresses, the epidermis may peel off or become darkened by putrefactive changes (melanatin and sulfide staining), obscuring the tattoo pigment located in the dermal layer. **Why Gamma Rays is the correct answer:** Gamma rays are high-energy electromagnetic radiation used primarily for sterilization or imaging dense structures (like bone) in specific industrial/medical contexts. They do not have the property of reflecting or fluorescing off dermal pigments to visualize a hidden tattoo. Therefore, they are **not** a recognized method for tattoo visualization. **Analysis of Incorrect Options:** * **3% Hydrogen Peroxide (H2O2):** This is a classic forensic technique. Soaking the skin in H2O2 helps "bleach" or clear the darkening caused by decomposition, making the underlying dermal pigments visible again. * **Infrared (IR) Photography:** Tattoo pigments (especially carbon-based black inks) absorb infrared light differently than the surrounding putrefied tissue. IR photography can "see through" the darkened surface layers to reveal the pattern beneath. * **Examination with a magnifying lens:** After cleaning the area or removing the superficial loose epidermis (cuticle), a simple magnifying lens can help identify faint pigment clusters in the dermis that are not visible to the naked eye. **High-Yield Clinical Pearls for NEET-PG:** * **Tattoo Pigment Location:** Tattoo ink is permanently deposited in the **Dermis**. * **Microscopic Finding:** On histology, tattoo pigment is found within **dermal macrophages**. * **Lymph Nodes:** In long-standing tattoos, the pigment can often be found in the **regional lymph nodes**, which can be a vital clue in highly decomposed or mutilated bodies where skin is missing. * **Other methods:** Ultraviolet (UV) light can also be used to visualize certain fluorescent tattoo inks.
Question 56: Which among the following is the most common type of finger impression?
- A. Arch
- B. Whorl
- C. Loop (Correct Answer)
- D. Composite
Explanation: **Explanation:** Fingerprint patterns (Dactylography) are categorized based on the arrangement of ridges. This system, known as the **Galton-Henry system**, is a primary method of identification in forensic medicine due to its permanence and uniqueness. **1. Why 'Loop' is Correct:** The **Loop** is the most common fingerprint pattern, found in approximately **60–65%** of the general population. In a loop pattern, the ridges enter from one side, curve back, and exit on the same side. Loops are further classified into *Ulnar* (opening toward the little finger) and *Radial* (opening toward the thumb), with Ulnar loops being significantly more frequent. **2. Why Other Options are Incorrect:** * **Whorl (Option B):** These are the second most common pattern, occurring in about **25–30%** of people. Ridges are arranged in concentric circles or spirals. * **Arch (Option A):** This is the rarest basic pattern, seen in only **5–7%** of the population. Ridges enter from one side and flow out the other with a slight rise in the center. * **Composite (Option D):** These are complex patterns that combine two or more of the above types (e.g., a central pocket loop or accidental whorl). They account for only **1–2%** of cases. **High-Yield Clinical Pearls for NEET-PG:** * **Dactylography (Galton’s System):** The study of fingerprints. It is considered the "Gold Standard" for identification because the chance of two people having identical prints is 1 in 64 billion. * **Permanence:** Fingerprints form during the **3rd to 4th month of intrauterine life** and remain unchanged until death (and even after, until the skin decomposes). * **Poroscopy (Locard’s Method):** The study of the number, size, and distribution of sweat pores on the ridges; useful when only fragmentary prints are available. * **Ridge Destruction:** Ridges can be temporarily altered by skin diseases or manual labor, but they reappear unless the **dermis** is deeply scarred (e.g., by leprosy, electric burns, or corrosive acids).
Question 57: What is the most common type of fingerprint pattern?
- A. Arch
- B. Whorl
- C. Loop (Correct Answer)
- D. Composite
Explanation: **Explanation:** Fingerprint patterns (Dactylography/Galton system) are a cornerstone of personal identification in forensic medicine. The classification is based on the arrangement of ridge patterns on the distal phalanges. **1. Why Loop is Correct:** The **Loop** is the most common fingerprint pattern, found in approximately **60–65%** of the general population. It is characterized by one or more ridges entering from one side, curving back, and exiting from the same side. Loops must have one delta and one core. They are further sub-classified into Ulnar and Radial loops based on the direction they face. **2. Analysis of Incorrect Options:** * **Whorl (Option B):** This is the second most common pattern, occurring in about **25–30%** of people. It consists of ridges that make a complete circuit and has at least two deltas. * **Arch (Option A):** This is the rarest major pattern, seen in only **5%** of the population. Ridges enter from one side and flow out the other without turning back. * **Composite (Option D):** This is a complex pattern that combines two or more of the basic patterns (e.g., a loop and a whorl). It is relatively uncommon compared to simple loops. **3. NEET-PG High-Yield Pearls:** * **Dactylography (Galton System):** It is the most reliable method of identification because fingerprints are unique (even in monozygotic twins) and remain unchanged throughout life (permanent). * **Poroscopy (Locard’s Method):** Study of sweat gland pores on the ridges; useful when only fractional prints are available. * **Bertillonage:** An obsolete system based on anthropometric measurements. * **Ridge Count:** The number of ridges between the delta and the core; used for classification. * **Legal Standing:** Fingerprints are permanent from the 4th month of intrauterine life.
Question 58: Which among the following is relatively not a method of identification in living individuals?
- A. Spectrogram
- B. Calligraphy
- C. Gait analysis
- D. Superimposition (Correct Answer)
Explanation: ### Explanation **Correct Answer: D. Superimposition** **Why Superimposition is the Correct Answer:** Superimposition (specifically **Video or Photo-Superimposition**) is a forensic technique used to identify a deceased individual by overlaying a photograph of a known person (taken during life) onto the skull found at a crime scene or excavation. Since this method requires the physical **skull** of the individual to compare anatomical landmarks (like the orbits, nasal bone, and teeth) with the facial features in the photograph, it is strictly a **post-mortem** identification tool. It cannot be performed on a living individual. **Analysis of Incorrect Options:** * **A. Spectrogram (Voiceprint):** This is the graphic representation of sound frequencies. Every individual has a unique voice pattern due to the specific anatomy of their vocal cords and oral cavity. It is a valid method for identifying **living** suspects in criminal investigations. * **B. Calligraphy (Handwriting Analysis):** Handwriting is considered a "behavioral biometric." Analyzing the style, pressure, and slant of writing is a standard forensic method to identify a **living** person, often used in cases of forgery or ransom notes. * **C. Gait Analysis:** This refers to the study of an individual's manner of walking. Because gait is unique to a person (influenced by skeletal structure and habit), it is used in forensic surveillance to identify **living** individuals from CCTV footage. **NEET-PG High-Yield Pearls:** * **Superimposition** is a "corroborative" rather than "absolute" method of identification. * **Quetelet’s Index:** Another name for Body Mass Index (BMI), used in identifying living individuals. * **Bertillonage (Anthropometry):** An obsolete system of identification based on 11 physical measurements of the human body. * **Primary Identifiers (The "Big Three"):** Dactylography (Fingerprints), Dental patterns, and DNA profiling. These are the most reliable for both living and dead.
Question 59: All of the following are true about the Kevorkian sign, except?
- A. Persists even after 3 years of death (Correct Answer)
- B. Appears within minutes of death
- C. Visualized using an ophthalmoscope
- D. Also known as the cattle tracking sign
Explanation: ### Explanation The **Kevorkian sign**, also known as **"Cattle Tracking"** or **"Trucking,"** is a significant early ocular sign of death. **1. Why Option A is the correct answer (The Exception):** The Kevorkian sign is a **transient** phenomenon. It occurs due to the cessation of blood flow and the drop in intraocular pressure, causing the column of blood in the retinal vessels to break into segments (resembling a line of moving cattle or railway trucks). This sign appears within **minutes (approx. 10–15 mins)** of death and disappears as the cornea becomes cloudy or the eye undergoes putrefaction. It certainly does **not** persist for 3 years; by that time, the soft tissues of the eye would have completely decomposed. **2. Analysis of Incorrect Options:** * **Option B:** It is one of the earliest signs of somatic death, appearing almost immediately (within minutes) after the heart stops beating. * **Option C:** Since it involves the fragmentation of blood in the retinal vessels, it must be visualized using an **ophthalmoscope**. * **Option D:** "Cattle tracking" is the standard synonymous term used in forensic literature to describe the segmented appearance of the retinal blood column. **Clinical Pearls for NEET-PG:** * **Other Ocular Signs of Death:** * **Tache Noire:** A brownish-black triangular opacity on the sclera due to exposure to air (drying). * **Sommer’s Sludge:** Another name for the darkening of the sclera. * **Intraocular Pressure:** Drops to 0 mmHg within 2 hours of death. * **Pupils:** Usually dilate initially (mydriasis) due to muscle relaxation, but this is not a reliable sign of death as it can be influenced by drugs. * **Corneal Reflex:** Loss of corneal reflex is one of the earliest signs of permanent brain damage/death.
Question 60: Which of the following is associated with 'Spalding sign'?
- A. Drowning
- B. Starvation
- C. Maceration (Correct Answer)
- D. Mummification
Explanation: **Explanation:** **Spalding’s Sign** is a classic radiological finding indicative of **intrauterine fetal death (IUFD)**. It occurs due to **maceration**, which is the aseptic autolysis of a fetus that dies in utero and remains in the amniotic fluid for an extended period. 1. **Why Maceration is Correct:** When a fetus dies in a sterile environment (amniotic fluid), the soft tissues undergo liquefaction. As the brain matter liquefies and shrinks, the intracranial pressure drops, causing the cranial vault bones to collapse and overlap. This **overlapping of skull bones** is known as Spalding’s sign. It typically appears 24 to 48 hours after fetal death. 2. **Why Other Options are Incorrect:** * **Drowning:** Associated with signs like *washerwoman’s hands* (wrinkling of skin) and *fine froth* at the mouth/nose, but not cranial bone overlapping. * **Starvation:** Leads to emaciation, loss of subcutaneous fat, and organ atrophy; it does not involve the aseptic autolysis seen in maceration. * **Mummification:** This is a form of dry decomposition occurring in hot, dry, airy conditions. The body shrivels and dries up rather than liquefying. **High-Yield Clinical Pearls for NEET-PG:** * **Robert’s Sign:** The appearance of gas (usually CO2) in the fetal heart and large vessels; it is the *earliest* radiological sign of IUFD (visible within 12 hours). * **Deuel’s Halo Sign:** Radioculency around the fetal head due to edema of the scalp tissues. * **Maceration Timeline:** Skin peeling (slippage) usually begins 12–24 hours after death. If a fetus is born with signs of maceration, it proves the death occurred *in utero*.
Practice by Chapter
Personal Identification Methods
Practice Questions
Anthropometry
Practice Questions
Dactylography (Fingerprinting)
Practice Questions
Dental Identification
Practice Questions
DNA Profiling
Practice Questions
Facial Reconstruction
Practice Questions
Superimposition Techniques
Practice Questions
Hair and Fiber Analysis
Practice Questions
Handwriting Analysis
Practice Questions
Identification of Remains
Practice Questions
Mass Disaster Victim Identification
Practice Questions
Age, Sex and Race Determination
Practice Questions
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