Cause of death for drowning in cold water:
Burking includes:
Which section of the Indian Penal Code deals with sexual intercourse by a public servant with a woman in his custody?
In forensic examination of gunshot wounds, which of the following is NOT typically found in contact wounds from shotgun discharge?
Police inquest is NOT required in:
Ochronosis is seen in poisoning with:
NEET-PG 2012 - Forensic Medicine NEET-PG Practice Questions and MCQs
Question 31: Cause of death for drowning in cold water:
- A. Inability to breathe (asphyxia) (Correct Answer)
- B. Loss of consciousness due to hypoxia
- C. Cardiac arrest due to vagal inhibition
- D. Cardiac arrest due to ventricular fibrillation
Explanation: ***Inability to breathe (asphyxia)*** - Drowning fundamentally involves **inhalation of water** into the airway, which prevents gas exchange in the lungs, leading to **asphyxia**. - In cold water, the initial gasp reflex can lead to rapid aspiration of water, causing immediate **laryngospasm** and closure of the airway, resulting in inability to breathe. - Asphyxia remains the **most common mechanism** across all types of drowning, including cold water cases. *Loss of consciousness due to hypoxia* - While **hypoxia** certainly occurs in drowning due to lack of gas exchange, loss of consciousness is a *consequence* of prolonged asphyxia, not the primary cause of death. - The immediate cause of death is the inability to oxygenate the blood due to water filling the lungs or severe laryngospasm. *Cardiac arrest due to vagal inhibition* - **Vagal inhibition** (also called **hydrocution** or **immersion syndrome**) is an important mechanism specifically in **cold water drowning**. - Sudden immersion in cold water can trigger massive vagal stimulation leading to immediate cardiac arrest (often asystole) before significant water aspiration occurs. - However, this mechanism occurs in a **minority of cold water drowning cases**, while asphyxia remains the predominant cause of death overall. *Cardiac arrest due to ventricular fibrillation* - **Ventricular fibrillation** can be a terminal event in drowning, often secondary to severe hypoxia and hypothermia, but it is usually not the initial or primary cause of death. - The cessation of breathing and subsequent lack of oxygen directly lead to organ failure, including cardiac dysrhythmias, rather than ventricular fibrillation being the independent initial event.
Question 32: Burking includes:
- A. Ligature strangulation
- B. Drowning mechanism
- C. Hanging technique
- D. Chest compression and airway obstruction (Correct Answer)
Explanation: ***Chest compression and airway obstruction*** - Burking is a **homicidal method** of suffocation that involves **covering the mouth and nose** (airway obstruction) combined with **compressing the chest or abdomen** to prevent breathing. - Named after **William Burke**, this technique was used to kill victims without leaving obvious signs of violence, making deaths appear natural. *Ligature strangulation* - Involves using a **cord, rope, or similar object** around the neck to compress blood vessels and/or airway. - Leaves characteristic **ligature marks** on the neck, which burking aims to avoid by using manual compression instead. *Drowning mechanism* - Involves **submersion in liquid** causing respiratory impairment and asphyxia. - Completely different mechanism from burking, which involves **manual suffocation** on dry land without water involvement. *Hanging technique* - Hanging involves **suspension of the body by the neck**, causing death through compression of neck structures. - This is completely different from burking and leaves distinct **hanging marks** on the neck, which burking specifically avoids.
Question 33: Which section of the Indian Penal Code deals with sexual intercourse by a public servant with a woman in his custody?
- A. 376A
- B. 375A
- C. 375B
- D. 376B (Correct Answer)
Explanation: ***376B*** - This section specifically addresses **sexual intercourse by a public servant** with a woman who is in his **custody**, or in the custody of a public authority or institution subordinate to him. - It prescribes **rigorous imprisonment for a term of 5 to 10 years and fine** for such acts, recognizing the **power imbalance** and breach of trust involved when a public servant exploits their position. - The law recognizes that consent is vitiated when there is a position of authority and custody involved. *376A* - This section deals with **punishment for causing death or persistent vegetative state of the victim** during commission of rape or gang rape. - It prescribes **rigorous imprisonment for a term not less than 20 years** which may extend to life imprisonment or death penalty. - This is distinct from the custody-based offense in 376B. *375A* - There is **no such section** as 375A in the Indian Penal Code. - Section 375 defines rape and its circumstances, but it does not have a subsection 375A. *375B* - There is **no such section** as 375B in the Indian Penal Code. - Section 375 defines rape and its circumstances, but it does not have a subsection 375B.
Question 34: In forensic examination of gunshot wounds, which of the following is NOT typically found in contact wounds from shotgun discharge?
- A. Stippling pattern around entry wound
- B. Powder burns on skin surface
- C. Muzzle imprint on contact wound
- D. Beveling of bone at exit wound (Correct Answer)
Explanation: ***Beveling of bone at exit wound*** - **Beveling** refers to the characteristic fracture pattern in bone caused by projectile penetration - At **entry wounds**, the inner table of bone shows a wider defect than the outer table (internal beveling) - At **exit wounds**, the outer table shows a wider defect than the inner table (external beveling) - While contact shotgun wounds to the head can cause devastating injuries with bone fragmentation, the specific question asks about features "**NOT typically found**" in the context of identifying contact wounds - Among the options, beveling at exit wounds is the least relevant to **identifying contact wound characteristics** at the entry site, which is the primary focus of forensic examination *Stippling pattern around entry wound* - **Stippling (tattooing)** consists of punctate abrasions caused by unburnt gunpowder particles striking the skin - This is characteristic of **intermediate-range wounds** (approximately 15-60 cm or 6-24 inches), NOT contact wounds - In a **contact wound**, the muzzle is pressed directly against the skin, so powder and gases are driven **into** the wound tract, not deposited **around** the entry site - **This is NOT found in contact wounds** and could be a correct answer *Powder burns on skin surface* - **Powder burns** are thermal injuries from hot gases and burning powder particles that scorch the skin surface - These indicate **close-range** discharge (within a few inches) but NOT true contact - In a **hard contact wound**, the muzzle is sealed against the skin, so hot gases enter the wound rather than causing surface burns - **This is NOT typically found in true contact wounds** and could be a correct answer *Muzzle imprint on contact wound* - A **muzzle imprint (muzzle contusion)** is an abrasion or contusion pattern matching the shape of the firearm's muzzle - This occurs when the muzzle is pressed firmly against the skin at discharge, with the explosive gases causing the skin to recoil against the muzzle end - This is a **pathognomonic sign of a contact gunshot wound** - **This IS found in contact wounds** and is therefore NOT the correct answer to this question
Question 35: Police inquest is NOT required in:
- A. Suicide
- B. Murder
- C. Death in police custody
- D. Natural death due to disease in elderly person at home (Correct Answer)
Explanation: ***Natural death due to disease in elderly person at home*** - Police inquest is **NOT required** for natural deaths occurring at home with a known medical condition - A registered medical practitioner who has been attending the deceased can issue a death certificate - No suspicion of foul play or unnatural circumstances exists - This is the only scenario among the options where police involvement is not mandated *Death in police custody* - Police inquest is **absolutely required** under **Section 176 CrPC** (mandatory magisterial inquiry) - Custodial deaths are considered highly sensitive and require thorough investigation - Ensures accountability and rules out torture, negligence, or human rights violations - Automatic judicial oversight is mandated by law *Suicide* - Police inquest is **required** as suicide is classified as an **unnatural death** - Investigation needed to confirm manner of death and rule out homicide - Section 174 CrPC mandates police investigation for all unnatural deaths - Documentation required for legal and insurance purposes *Murder* - Police inquest is **absolutely required** as murder is a **criminal homicide** - Section 174 CrPC mandates immediate police investigation - Crime scene examination, evidence collection, and suspect identification are essential - Forms the basis for criminal prosecution under IPC Section 302
Question 36: Ochronosis is seen in poisoning with:
- A. Boric acid
- B. HCl
- C. Carbolic acid (Correct Answer)
- D. Oxalic acid
Explanation: ***Carbolic acid (Phenol)*** - Carbolic acid causes **blackish-brown discoloration** of skin and tissues at the site of contact due to its **corrosive action and protein denaturation**. - This characteristic **dark staining of tissues** is a forensic marker of phenol poisoning and is sometimes referred to in forensic literature as "ochronosis-like" changes. - Phenol is absorbed through skin and mucous membranes and can cause **CNS depression, convulsions, and metabolic acidosis**. *Boric acid* - Boric acid poisoning manifests with **"boiled lobster" appearance** of skin (erythematous desquamation). - Causes **gastrointestinal symptoms** (vomiting, diarrhea) and **CNS effects** in severe cases. - Does not cause blackish tissue discoloration. *HCl (Hydrochloric acid)* - HCl is a **strong corrosive acid** causing severe chemical burns. - Produces **white or gray coagulated necrosis** of tissues on contact. - Does not produce the dark discoloration characteristic of phenol. *Oxalic acid* - Oxalic acid poisoning causes **hypocalcemia** by chelating calcium ions. - Leads to **cardiac arrhythmias, tetany, and renal toxicity** (calcium oxalate crystal deposition). - Does not cause tissue discoloration or ochronosis.