Q. 1
Medical Sciences
Difficulty: Easy
(1 Mark)
In forensic pathology, the progressive cooling of the body after death under ambient room temperature is termed:
💡
Step-by-Step Explanation & Concept Rationale
Algor mortis is the postmortem decrease in body temperature until thermal equilibrium with the environment is achieved (approx 1.5°F/hour in temperate conditions).
Q. 2
Medical Sciences
Difficulty: Easy
(1 Mark)
Cherry-red or bright pink postmortem hypostasis (livor mortis) of the skin and internal organs is characteristic of fatal poisoning with:
💡
Step-by-Step Explanation & Concept Rationale
Carbon monoxide binds with high affinity to hemoglobin forming carboxyhemoglobin, giving blood, tissues, and livor mortis a distinctive cherry-red hue.
Q. 3
Medical Sciences
Difficulty: Medium
(1 Mark)
The presence of a subperiosteal hematoma bounded by cranial suture lines in a newborn following instrumental delivery is termed a:
💡
Step-by-Step Explanation & Concept Rationale
Cephalohematoma is traumatic bleeding beneath the periosteum of a cranial bone and is strictly limited by suture lines, unlike caput succedaneum.
Q. 4
Medical Sciences
Difficulty: Medium
(1 Mark)
Which heavy metal poisoning is classically associated with wrist drop (radial nerve motor neuropathy) and Burton's blue line along the gingival margins?
💡
Step-by-Step Explanation & Concept Rationale
Chronic lead toxicity produces motor neuropathy (predominantly wrist and foot drop), microcytic anemia with basophilic stippling, and blue Burton lines on gums.
Q. 5
Medical Sciences
Difficulty: Hard
(1 Mark)
In a victim of drowning, the presence of diatoms inside the bone marrow and internal organs indicates:
💡
Step-by-Step Explanation & Concept Rationale
Diatom test is positive when inhaled water enters alveolar capillaries and microscopic microscopic silica-walled algae are carried via circulation to closed organs like bone marrow.
Q. 6
Medical Sciences
Difficulty: Medium
(1 Mark)
What is the hallmark postmortem finding distinguishing suicidal hanging from homicidal strangulation by ligature?
💡
Step-by-Step Explanation & Concept Rationale
In hanging, the ligature mark is typically inverted V-shaped (oblique), situated above the thyroid cartilage, and interrupted at the site of the knot.
Q. 7
Medical Sciences
Difficulty: Medium
(1 Mark)
Which antidote is specifically indicated for acute severe iron poisoning exhibiting metabolic acidosis and radiopaque pills on abdominal radiograph?
💡
Step-by-Step Explanation & Concept Rationale
Deferoxamine binds free circulating ferric iron (Fe3+) with high affinity, forming water-soluble ferrioxamine which is excreted in urine producing a 'vin-rose' color.
Q. 8
Medical Sciences
Difficulty: Easy
(1 Mark)
The definitive sign of death that cannot be simulated during life and results from ATP depletion in muscle fibers is:
💡
Step-by-Step Explanation & Concept Rationale
Rigor mortis occurs due to lack of ATP required to detach myosin cross-bridges from actin filaments, causing universal muscular stiffening.
Q. 9
Medical Sciences
Difficulty: Easy
(1 Mark)
Pupillary constriction (pinpoint pupils), salivation, lacrimation, urination, defecation, and marked bronchospasm (SLUDGE syndrome) occur in:
💡
Step-by-Step Explanation & Concept Rationale
Inhibition of acetylcholinesterase leads to systemic accumulation of acetylcholine, triggering overwhelming muscarinic and nicotinic hyperstimulation.
Q. 10
Medical Sciences
Difficulty: Easy
(1 Mark)
Which legal document in Pakistan mandates a medical practitioner to record detailed injuries, weapon types, and wound dimensions for criminal proceedings?
💡
Step-by-Step Explanation & Concept Rationale
A Medico-Legal Certificate (MLC) is an official legal examination report documenting nature, size, and duration of injuries under the Qisas and Diyat Ordinance / PPC.
Q. 11
Medical Sciences
Difficulty: Medium
(1 Mark)
A 60-year-old hyperopic female presents with sudden severe ocular pain, headache, blurred vision with colored halos around lights, nausea, and a mid-dilated non-reactive pupil. What is the diagnosis?
💡
Step-by-Step Explanation & Concept Rationale
Acute angle-closure glaucoma results from sudden pupillary block and acute elevation of intraocular pressure, requiring emergent medical reduction (topical beta-blockers, pilocarpine, IV acetazolamide).
Q. 12
Medical Sciences
Difficulty: Easy
(1 Mark)
Little's area (Kiesselbach's plexus) on the anterior nasal septum is the most frequent anatomical site for:
💡
Step-by-Step Explanation & Concept Rationale
Kiesselbach's plexus is an arterial anastomosis formed by five arteries on the anterior-inferior nasal septum, accounting for over 90% of epistaxis episodes.
Q. 13
Medical Sciences
Difficulty: Easy
(1 Mark)
The presence of microaneurysms, dot-and-blot hemorrhages, hard exudates, and cotton-wool spots on funduscopic examination is diagnostic of:
💡
Step-by-Step Explanation & Concept Rationale
Non-proliferative diabetic retinopathy features microvascular leakage with retinal microaneurysms, hemorrhages, hard lipid exudates, and nerve fiber layer infarcts (cotton-wool spots).
Q. 14
Medical Sciences
Difficulty: Easy
(1 Mark)
Acute otitis media in infants and toddlers most commonly spreads from the nasopharynx via which anatomical conduit?
💡
Step-by-Step Explanation & Concept Rationale
In infants, the Eustachian tube is shorter, wider, and more horizontal, facilitating reflux and spread of upper respiratory tract bacteria into the middle ear cleft.
Q. 15
Medical Sciences
Difficulty: Medium
(1 Mark)
A 'cherry-red spot' at the fovea surrounded by a pale, ischemic retina on fundus examination is pathognomonic for acute:
💡
Step-by-Step Explanation & Concept Rationale
CRAO cuts off retinal arterial perfusion causing diffuse ischemic retinal pallor; the thin fovea transmits the underlying choroidal vascularity as a conspicuous 'cherry-red spot'.
Q. 16
Medical Sciences
Difficulty: Easy
(1 Mark)
Which tuning fork test compares bone conduction with air conduction, with normal hearing showing air conduction greater than bone conduction (AC > BC)?
💡
Step-by-Step Explanation & Concept Rationale
Rinne test uses a 512 Hz tuning fork; a normal (positive) result occurs when air conduction is twice as long and loud as bone conduction (AC > BC).
Q. 17
Medical Sciences
Difficulty: Easy
(1 Mark)
The most common organism causing acute tonsillitis and peritonsillar abscess (quinsy) in young adults is:
💡
Step-by-Step Explanation & Concept Rationale
Streptococcus pyogenes (Group A Strep) is the predominant bacterial cause of acute exudative pharyngotonsillitis and purulent peritonsillar abscess.
Q. 18
Medical Sciences
Difficulty: Medium
(1 Mark)
A dendritic corneal ulcer visualized with fluorescein staining under cobalt blue illumination is pathognomonic of:
💡
Step-by-Step Explanation & Concept Rationale
HSV epithelial keratitis produces classic branching dendritic lesions with terminal bulbs; topical corticosteroids are strictly contraindicated.
Q. 19
Medical Sciences
Difficulty: Easy
(1 Mark)
Intensely pruritic, erythematous papules and burrows in the web spaces of fingers, wrists, and axillae with nocturnal exacerbation are classic for:
💡
Step-by-Step Explanation & Concept Rationale
Sarcoptes scabiei mites burrow into the stratum corneum; nocturnal pruritus and web-space burrows are classic signs, treated with 5% Permethrin dermal cream.
Q. 20
Medical Sciences
Difficulty: Easy
(1 Mark)
Well-demarcated, salmon-pink erythematous plaques covered with silvery-white micaceous scales on extensor surfaces (elbows, knees) exhibiting the Auspitz sign describe:
💡
Step-by-Step Explanation & Concept Rationale
Psoriasis vulgaris is a chronic autoimmune dermatosis featuring epidermal hyperproliferation; scraping scales removes them and reveals pinpoint bleeding (Auspitz sign).
Q. 21
Medical Sciences
Difficulty: Easy
(1 Mark)
In a patient presenting with an acutely manic episode, grandiosity, reduced need for sleep, and pressured speech, the classic mood-stabilizing drug of choice is:
💡
Step-by-Step Explanation & Concept Rationale
Lithium is the gold-standard mood stabilizer for acute mania and maintenance therapy in Bipolar I Disorder.
Q. 22
Medical Sciences
Difficulty: Easy
(1 Mark)
The definitive clinical criteria for diagnosing Major Depressive Disorder requires symptoms to be continuously present for at least:
💡
Step-by-Step Explanation & Concept Rationale
DSM-5 and ICD-11 define an episode of major depressive disorder as persistent low mood or anhedonia alongside associated neurovegetative symptoms for at least two weeks.
Q. 23
Medical Sciences
Difficulty: Medium
(1 Mark)
Extrapyramidal symptoms (EPS) including acute dystonia, parkinsonism, and akathisia are most commonly provoked by which class of psychotropic medications?
💡
Step-by-Step Explanation & Concept Rationale
High-potency typical antipsychotics potently block dopamine D2 receptors in the striatum, precipitating motor extrapyramidal adverse effects.
Q. 24
Medical Sciences
Difficulty: Hard
(1 Mark)
A chronic autoimmune bullous dermatosis in elderly individuals with tense subepidermal blisters and negative Nikolsky sign caused by autoantibodies against hemidesmosomes is:
💡
Step-by-Step Explanation & Concept Rationale
Bullous pemphigoid involves IgG targeting hemidesmosomal antigens (BP180/BP230), causing subepidermal tense blisters that do not easily rupture (Nikolsky negative).
Q. 25
Medical Sciences
Difficulty: Easy
(1 Mark)
Delusions of persecution, auditory hallucinations, thought broadcasting, and social withdrawal lasting more than 6 months are characteristic of:
💡
Step-by-Step Explanation & Concept Rationale
Schizophrenia is diagnosed when characteristic positive and negative psychotic symptoms persist for at least 6 months with significant social/occupational impairment.
Study Stream Progress:
Showing 25 of 25 Questions (100%)
Ready to Test Your Retention & Speed?
Now that you have reviewed the study questions and rationales, test yourself in our interactive 1-by-1 practice engine or take the full official timed mock exam.