Preparing for INICET November 2025 and NEET PG 2026?
One of the smartest ways to boost your score is by practicing MCQs with explanations and clinical pearls. Instead of rote memorization, understanding why an answer is correct helps you retain concepts longer and apply them clinically.
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| Sharpen your concepts for NEET PG, INICET, FMGE, and USMLE |
Here’s Part 1 of the Medcrux MCQ Series – 10 high-yield questions with detailed explanations to sharpen your concepts.
🔹 MCQs with Explanations
1) A young female presented with vaginal itching and green, frothy genital discharge. Strawberry vagina is seen on examination. What will be the drug of choice?
A) Doxycycline
B) Oral fluconazole
C) Metronidazole
D) Azithromycin
✅ Correct Answer: C) Metronidazole
👉 Metronidazole is the drug of choice for the treatment of trichomoniasis.
👉 It is an antibiotic with specific activity against anaerobic organisms, including Trichomonas vaginalis.
👉 Treatment with metronidazole is administered as a 2 g single oral dose.
2) A 5-year-old child is brought to the OPD with a hypopigmented, finely scaly patch on her face. There is a history of atopy in the family. What is the clinical diagnosis?
A) Leprosy
B) Pityriasis versicolor
C) Pityriasis alba
D) Atopic eczema
✅ Correct Answer: C) Pityriasis alba
👉 The above scenario of a hypopigmented, scaly patch is suggestive of pityriasis alba.
👉 It is a pattern of dermatitis in which hypopigmentation is the most conspicuous feature.
👉 It is seen in the age group of 3-16 years.
👉 Lesions have scaling and are usually not well marginated.
👉 In children, the lesions are often confined to the face and are most common on the cheeks and around the mouth and chin.
👉 It is often a manifestation of atopic eczema but it is not confined to atopic individuals.
3) Which of the morpholine drugs listed below is used as a nail lacquer?
A) Amorolfine
B) Oxiconazole
C) Ciclopirox olamine
D) Tioconazole
✅ Correct Answer: A) Amorolfine
👉 Amorolfine is an antifungal medication that belongs to the class of drugs known as morpholines.
👉 It is commonly used as a topical nail lacquer for the treatment of fungal infections of the nails, known as onychomycosis.
👉 Amorolfine works by inhibiting the growth of fungi, including dermatophytes and yeasts, which are responsible for causing nail infections.
4) What is the cause of the greenish-black color of the initial stool in a newborn?
A) Bilirubin
B) Biliverdin
C) Meconium
D) Gut flora of neonate
✅ Correct Answer: C) Meconium
👉 Meconium is the greenish-black substance that makes up the initial stool of a newborn.
👉 It is composed of materials that the fetus ingests while in the womb, such as amniotic fluid, mucus, and cells from the intestinal lining.
👉 Meconium also contains bile, which contributes to its color.
👉 The primary reason for the greenish-black color is the mixture of these components.
5) Which of the following hormones is not responsible for the in-utero growth of a baby?
A) Insulin
B) Insulin like growth factor
C) Growth hormone
D) Thyroxine
✅ Correct Answer: C) Growth hormone
👉 Fetal growth is predominantly controlled by insulin-like growth factor-1 (IGF-1), insulin and other growth factors.
👉 Maternal and fetal thyroid hormones also play a role in the normal development of virtually all fetal tissues, especially the brain.
6) Stimulation of which of the following causes cough when the external acoustic canal is scratched?
A) Auriculotemporal nerve
B) Auricular branch of vagus
C) Great auricular nerve
D) Facial nerve
✅ Correct Answer: B) Auricular branch of vagus
👉 Scratching the external acoustic canal can trigger a cough reflex due to stimulation of the auricular branch of the vagus nerve (Arnold's nerve).
👉 The vagus nerve regulates coughing, breathing, and swallowing.
👉 Irritation of this branch can lead to a reflex cough response.
7) Zika virus is transmitted by:
A) Aedes aegypti
B) Culex
C) Anopheles
D) Phlebotomus
✅ Correct Answer: A) Aedes aegypti
👉 Aedes aegypti mosquitoes are the primary vector for Zika virus transmission.
👉 These mosquitoes are also responsible for transmitting dengue, chikungunya, yellow fever, and Rift valley fever.
8) Which organism is the most probable cause of vomiting within 3 hours after eating at a party in a 14-year-old boy?
A) Staphylococcus aureus
B) Clostridium botulinum
C) Clostridium perfringes
D) Salmonella typhi
✅ Correct Answer: A) Staphylococcus aureus
👉 Staphylococcus aureus produces enterotoxins in contaminated dairy and meat.
👉 Symptoms include rapid-onset nausea and vomiting within 6 hours of ingestion.
9) What is the most common neurological manifestation seen in patients with systemic lupus erythematosus?
A) Seizures
B) Depression
C) Cognitive impairment
D) Polyneuropathy
✅ Correct Answer: C) Cognitive impairment
👉 The most common neurological manifestation of SLE is cognitive impairment.
👉 It can manifest as memory and reasoning difficulties.
10) Keshan disease and Kashin Beck disease are due to the deficiency of which of the following?
A) Zinc
B) Manganese
C) Selenium
D) Chromium
✅ Correct Answer: C) Selenium
👉 Selenium is an enzyme cofactor for glutathione peroxidase, preventing oxidative damage.
👉 Selenium deficiency causes:
→ Keshan disease: Congestive cardiomyopathy
→ Kashin Beck disease: Endemic osteochondropathy.
🔹 Clinical Pearls 💡
- 👉 Morning periorbital edema → think of Nephrotic syndrome in children.
- 👉 Red Man Syndrome → classically associated with Vancomycin infusion.
- 👉 Right-sided heart failure → most common cause of bilateral pedal edema.
🔹 Final Notes
That’s it for Part 1 of the Medcrux MCQ Series.
Keep practicing – MCQs with explanations and pearls are the fastest way to prepare smartly for your exams.
👉 Looking for medical books & devices to support your preparation?
Check out my other blog 👉 Mediflips 📚💉
Stay tuned for Part 2 with another set of high-yield MCQs! 🚀
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