Hey orris how can you help me I’m studying mbbs and doing internship and preparing for neet pg

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Can you give me 25 neet pg mcqs for my preparation with detailed answers and analysis in which topic I have to work ?

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Here are your 25 NEET PG MCQs - mixed subjects, medium difficulty (application-based), just like the actual exam pattern!

🩺 NEET PG Practice - 25 MCQs (Mixed Subjects | Medium Difficulty)

Attempt all questions first, then scroll to answers

PHARMACOLOGY (Q1-5)

Q1. A 45-year-old hypertensive patient develops a dry cough after starting antihypertensive therapy. The drug is stopped and replaced. What is the mechanism behind the cough?

A) Beta-1 blockade
B) Accumulation of bradykinin
C) Increased prostaglandin E2
D) Direct bronchial irritation

Q2. A patient on warfarin therapy is started on rifampicin for tuberculosis. What change do you expect?

A) Increased anticoagulant effect
B) Decreased anticoagulant effect
C) No change
D) Increased bleeding risk

Q3. Which drug used in Parkinson's disease acts by inhibiting COMT (catechol-O-methyltransferase)?

A) Selegiline
B) Bromocriptine
C) Entacapone
D) Amantadine

Q4. A patient with type 2 DM is started on a drug that causes weight loss, lowers HbA1c, and reduces cardiovascular events. The drug works by blocking glucose reabsorption in the proximal tubule. Identify it:

A) Metformin
B) Sitagliptin
C) Empagliflozin
D) Glipizide

Q5. Penicillin acts by:

A) Inhibiting 30S ribosome
B) Inhibiting DNA gyrase
C) Inhibiting transpeptidase (PBP)
D) Disrupting cell membrane

PATHOLOGY (Q6-10)

Q6. A 60-year-old man with chronic alcoholism shows a liver biopsy with Mallory-Denk bodies. These are composed of:

A) Amyloid fibrils
B) Damaged keratin intermediate filaments
C) Collagen deposits
D) Fat vacuoles

Q7. Congo red stain with apple-green birefringence under polarized light is characteristic of:

A) Fibrin deposits
B) Glycogen
C) Amyloid
D) Mucin

Q8. Reed-Sternberg cells are pathognomonic of:

A) Non-Hodgkin lymphoma
B) Hodgkin lymphoma
C) Multiple myeloma
D) Burkitt lymphoma

Q9. A 35-year-old woman presents with painless cervical lymphadenopathy. Biopsy shows granulomas with central caseous necrosis. The MOST likely diagnosis is:

A) Sarcoidosis
B) Cat scratch disease
C) Tuberculosis
D) Histoplasmosis

Q10. Virchow's triad for thrombosis includes all EXCEPT:

A) Endothelial injury
B) Hypercoagulability
C) Stasis of blood flow
D) Hyperlipidemia

MEDICINE (Q11-15)

Q11. A 55-year-old male smoker presents with a progressively enlarging painless neck mass. CT shows a mediastinal mass. Elevated serum ACE levels are found. The MOST likely diagnosis is:

A) Lung carcinoma
B) Sarcoidosis
C) Lymphoma
D) Tuberculosis

Q12. JVP waveform: The 'a' wave is absent in:

A) Tricuspid stenosis
B) Atrial fibrillation
C) Right heart failure
D) Constrictive pericarditis

Q13. A 30-year-old woman presents with butterfly rash, arthralgia, and photosensitivity. ANA is positive. Anti-dsDNA antibody is most specific for:

A) Rheumatoid arthritis
B) Scleroderma
C) Systemic Lupus Erythematosus (SLE)
D) Dermatomyositis

Q14. Which of the following is the MOST sensitive test for detecting H. pylori in a patient currently taking proton pump inhibitors (PPIs)?

A) Urea breath test
B) Rapid urease test (CLO test)
C) Stool antigen test
D) Serology (IgG antibodies)

Q15. A patient presents with high fever, jaundice, and right upper quadrant pain (Charcot's triad). The MOST likely diagnosis is:

A) Cholecystitis
B) Acute cholangitis
C) Hepatitis A
D) Choledocholithiasis without infection

SURGERY (Q16-18)

Q16. The MOST common position of the appendix is:

A) Pelvic
B) Retrocaecal
C) Pre-ileal
D) Paracaecal

Q17. A 70-year-old man presents with painless hematuria. Cystoscopy reveals a papillary lesion. The MOST likely diagnosis is:

A) Transitional cell carcinoma of bladder
B) Squamous cell carcinoma
C) Renal cell carcinoma
D) Prostate carcinoma

Q18. Which type of thyroid cancer has the BEST prognosis?

A) Medullary carcinoma
B) Anaplastic carcinoma
C) Follicular carcinoma
D) Papillary carcinoma

ANATOMY (Q19-20)

Q19. The left recurrent laryngeal nerve hooks around:

A) Subclavian artery
B) Arch of aorta
C) Common carotid artery
D) Pulmonary trunk

Q20. McBurney's point lies at:

A) Junction of inner 1/3 and outer 2/3 of line from umbilicus to ASIS
B) Junction of outer 1/3 and inner 2/3 of line from umbilicus to ASIS
C) Midpoint between umbilicus and ASIS
D) 2 cm above ASIS

PHYSIOLOGY (Q21-22)

Q21. The oxygen-hemoglobin dissociation curve shifts to the RIGHT in:

A) Decreased temperature
B) Decreased 2,3-DPG
C) Increased PCO2
D) Alkalosis

Q22. The normal GFR in a healthy adult is approximately:

A) 80 mL/min
B) 100 mL/min
C) 125 mL/min
D) 150 mL/min

MICROBIOLOGY (Q23-24)

Q23. "School of fish" pattern on Gram stain is seen in:

A) Haemophilus influenzae
B) Haemophilus ducreyi
C) Klebsiella pneumoniae
D) Bordetella pertussis

Q24. Negri bodies are seen in:

A) Herpes simplex encephalitis
B) Rabies
C) Polio
D) Measles

BIOCHEMISTRY (Q25)

Q25. A child presents with mental retardation, fair skin, musty odor of urine, and eczema. The enzyme deficiency is:

A) Homogentisate oxidase
B) Cystathionine synthase
C) Phenylalanine hydroxylase
D) Tyrosine aminotransferase

✅ DETAILED ANSWERS & EXPLANATIONS

A1. Answer: B - Accumulation of bradykinin ACE inhibitors (e.g., enalapril, ramipril) block the conversion of angiotensin I to II AND prevent breakdown of bradykinin. Bradykinin accumulation irritates bronchial mucosa causing a dry cough in ~10-15% of patients. Switch to ARBs (e.g., losartan) which don't affect bradykinin. Key NEET point: ACE inhibitor cough = bradykinin. ARBs do NOT cause cough.

A2. Answer: B - Decreased anticoagulant effect Rifampicin is a potent inducer of CYP450 enzymes (especially CYP2C9), which increases warfarin metabolism, leading to reduced anticoagulant effect. Warfarin dose needs to be increased. This is a classic drug interaction tested repeatedly in NEET PG. Key NEET point: Rifampicin INDUCES CYP450 → reduces warfarin effect.

A3. Answer: C - Entacapone COMT inhibitors used in Parkinson's: Entacapone (peripheral only) and Tolcapone (peripheral + central). Selegiline = MAO-B inhibitor. Bromocriptine = dopamine agonist. Amantadine = increases dopamine release + NMDA antagonist. Key NEET point: COMT inhibitors = Entacapone, Tolcapone. They extend levodopa effect by blocking its peripheral breakdown.

A4. Answer: C - Empagliflozin SGLT-2 inhibitors (gliflozins) block sodium-glucose cotransporter 2 in the proximal tubule → glycosuria → weight loss + BP reduction. EMPA-REG OUTCOME trial showed significant CV mortality reduction. Class also includes dapagliflozin, canagliflozin. Key NEET point: SGLT-2 inhibitors → glucosuria, weight loss, CV benefit, risk of genital mycotic infections.

A5. Answer: C - Inhibiting transpeptidase (PBP) Beta-lactam antibiotics (penicillins, cephalosporins, carbapenems) bind to Penicillin Binding Proteins (PBPs = transpeptidases) → inhibit cross-linking of peptidoglycan cell wall → bacterial lysis. Key NEET point: 30S inhibitors = aminoglycosides, tetracyclines. 50S inhibitors = macrolides, chloramphenicol. DNA gyrase = fluoroquinolones.

A6. Answer: B - Damaged keratin intermediate filaments Mallory-Denk bodies (formerly Mallory bodies) are intracytoplasmic inclusions in hepatocytes composed of ubiquitinated, misfolded keratin 8/18 intermediate filaments. Seen in alcoholic hepatitis, NASH, Wilson's disease, primary biliary cirrhosis. Key NEET point: Mallory bodies = eosinophilic inclusions in hepatocytes = damaged keratin filaments.

A7. Answer: C - Amyloid Amyloid stains with Congo red and shows apple-green birefringence under polarized light - a pathognomonic finding. This is due to the beta-pleated sheet configuration of amyloid fibrils. Key NEET point: Congo red + apple-green birefringence = AMYLOID. Never forget this.

A8. Answer: B - Hodgkin lymphoma Reed-Sternberg cells are the hallmark of Hodgkin lymphoma. Classic RS cell = "owl-eye" appearance (large binucleated cell with prominent eosinophilic nucleoli). They are derived from germinal center B cells. Key NEET point: RS cells in HL. Burkitt = c-myc translocation t(8;14). Myeloma = plasma cells with "clock-face" chromatin.

A9. Answer: C - Tuberculosis Caseating (caseous necrosis) granulomas = TB until proven otherwise. Sarcoidosis shows NON-caseating granulomas. Cat scratch disease = stellate necrosis. The combination of painless cervical lymphadenopathy + caseating granuloma = TB lymphadenitis (scrofula). Key NEET point: Caseating granuloma = TB. Non-caseating granuloma = Sarcoidosis.

A10. Answer: D - Hyperlipidemia Virchow's triad = (1) Endothelial injury, (2) Abnormal blood flow (stasis/turbulence), (3) Hypercoagulability. Hyperlipidemia is a risk factor for atherosclerosis but is NOT part of Virchow's triad. Key NEET point: Virchow's triad = Endothelial damage + Stasis + Hypercoagulability.

A11. Answer: B - Sarcoidosis Elevated ACE levels + bilateral hilar lymphadenopathy (mediastinal involvement) + non-caseating granulomas = Sarcoidosis. The "painless neck mass" can be lymphadenopathy. ACE is produced by epithelioid cells in granulomas. Key NEET point: Raised serum ACE = Sarcoidosis. Also check for hypercalcemia (due to 1-alpha hydroxylase in macrophages).

A12. Answer: B - Atrial fibrillation The 'a' wave in JVP represents atrial contraction. In atrial fibrillation, there is no coordinated atrial contraction, so the 'a' wave is ABSENT. In tricuspid stenosis, the 'a' wave is prominent (giant 'a' wave). Key NEET point: No 'a' wave = AF. Giant 'a' wave = tricuspid stenosis, pulmonary hypertension. Cannon 'a' wave = complete heart block.

A13. Answer: C - SLE Anti-dsDNA antibodies are highly specific for SLE (specificity ~95%) and correlate with disease activity (especially lupus nephritis). ANA is sensitive but not specific. Anti-Smith is most specific but less sensitive. Anti-dsDNA titers can be used to monitor flares. Key NEET point: SLE markers: ANA (sensitive), Anti-dsDNA (specific, correlates with activity), Anti-Smith (most specific).

A14. Answer: C - Stool antigen test In patients on PPIs, the urea breath test and CLO test have reduced sensitivity (false negatives) because PPIs suppress H. pylori urease activity. Stool antigen test (using monoclonal antibodies) is less affected by PPIs. Serology remains positive even after eradication (not useful for active infection). Key NEET point: On PPIs → use stool antigen test. Urea breath test = best for confirmation of eradication (after stopping PPIs 2 weeks).

A15. Answer: B - Acute cholangitis Charcot's triad = Fever + Jaundice + RUQ pain = Acute (ascending) Cholangitis. Reynolds pentad adds hypotension + altered sensorium (septic shock). Cause is usually choledocholithiasis + bacterial infection of the biliary tree. Key NEET point: Charcot's triad = Cholangitis. Reynolds pentad = severe cholangitis with sepsis.

A16. Answer: B - Retrocaecal The most common position of the appendix is retrocaecal (65-70%). This explains why patients with retrocaecal appendicitis may have atypical presentations with flank/back pain rather than classical RIF pain. Key NEET point: Most common position = Retrocaecal. Pelvic position = most common in females (can mimic gynecological pathology).

A17. Answer: A - Transitional cell carcinoma (TCC) of bladder Painless hematuria is the classic presentation of bladder cancer. TCC (now called urothelial carcinoma) is the MOST common bladder tumor. Risk factors: smoking (most common), aniline dye exposure, cyclophosphamide, schistosomiasis (associated with SCC). Key NEET point: Painless hematuria = bladder Ca (TCC). Schistosomiasis + bladder = Squamous cell carcinoma.

A18. Answer: D - Papillary carcinoma Papillary carcinoma = BEST prognosis among thyroid cancers (10-year survival ~95%). It spreads via lymphatics (not blood). Anaplastic = WORST prognosis (median survival 3-6 months). Follicular = spreads hematogenously to bone and lungs. Key NEET point: Thyroid Ca prognosis: Papillary > Follicular > Medullary > Anaplastic. "PFMA" - Papillary = Psammoma bodies.

A19. Answer: B - Arch of aorta The LEFT recurrent laryngeal nerve loops under the arch of the aorta (at the ligamentum arteriosum). The RIGHT recurrent laryngeal nerve loops around the right subclavian artery. This is why left RLN palsy may be caused by aortic aneurysm, mediastinal tumors, or bronchogenic carcinoma. Key NEET point: Left RLN = hooks arch of aorta. Right RLN = hooks right subclavian artery.

A20. Answer: B - Junction of outer 1/3 and inner 2/3 from umbilicus to ASIS McBurney's point lies at the junction of the outer 1/3 and inner 2/3 of the line drawn from the umbilicus to the right anterior superior iliac spine (ASIS). This is the surface marking for the base of the appendix. Key NEET point: McBurney's point = outer 1/3 from ASIS on the ASIS-to-umbilicus line.

A21. Answer: C - Increased PCO2 Right shift of O2-Hb dissociation curve = decreased O2 affinity = more O2 released to tissues. Caused by: increased PCO2, increased H+ (acidosis), increased temperature, increased 2,3-DPG. Left shift = opposite conditions + fetal Hb, CO poisoning, methemoglobin. Key NEET mnemonic: RIGHT shift = "CADET" - CO2, Acid, 2,3-DPG, Exercise, Temperature (increase).

A22. Answer: C - 125 mL/min Normal GFR in a healthy adult = ~125 mL/min (180 L/day filtered, ~1.8 L excreted as urine). GFR is used to stage CKD: Stage 1 (>90), Stage 2 (60-89), Stage 3 (30-59), Stage 4 (15-29), Stage 5 (<15 = ESRD). Key NEET point: Normal GFR = 125 mL/min. CrCl slightly overestimates GFR due to tubular secretion of creatinine.

A23. Answer: B - Haemophilus ducreyi H. ducreyi (causes chancroid - painful genital ulcer) shows a "school of fish" or "railroad track" arrangement on Gram stain. It is a gram-negative coccobacillus. Key NEET point: Chancroid = H. ducreyi = "school of fish" on Gram stain = painful genital ulcer + tender inguinal lymphadenopathy.

A24. Answer: B - Rabies Negri bodies are eosinophilic intracytoplasmic inclusions found in neurons (especially hippocampal pyramidal cells and Purkinje cells) in rabies. They represent aggregates of viral nucleocapsids. Key NEET point: Negri bodies = Rabies. Cowdry type A bodies = HSV/CMV. Guarnieri bodies = Vaccinia/Smallpox. Owl-eye inclusion = CMV.

A25. Answer: C - Phenylalanine hydroxylase Classic PKU (Phenylketonuria) = deficiency of phenylalanine hydroxylase → accumulation of phenylalanine → converted to phenylpyruvate (musty/mousy odor). Features: intellectual disability, fair skin/hair (reduced melanin), eczema, seizures. Key NEET point: PKU = Phe hydroxylase deficiency. Alkaptonuria = homogentisate oxidase. Homocystinuria = cystathionine synthase.

📊 Topic Analysis - Where You Need to Work

Based on the distribution and typical student performance patterns, here's your study priority map:

Priority	Subject	Key Topics to Revise
🔴 HIGH	Pharmacology	Drug mechanisms, CYP450 interactions, new drug classes (SGLT2, GLP-1), antibiotic targets
🔴 HIGH	Pathology	Inclusion bodies, special stains, cell markers, tumor markers
🟡 MEDIUM	Medicine	JVP waveforms, autoantibodies, triad/pentad associations
🟡 MEDIUM	Microbiology	Inclusion bodies, morphological patterns, STI causative agents
🟢 REVIEW	Surgery	Thyroid cancers, appendix positions, cancer presentations
🟢 REVIEW	Anatomy	Nerve loops, surface markings
🟢 REVIEW	Physiology	Hb-O2 curve shifts, GFR values
🟢 REVIEW	Biochemistry	Inborn errors of metabolism

🎯 NEET PG Smart Tips

Inclusion bodies - a guaranteed 1-2 marks topic every year. Make a chart of all inclusion bodies.
Drug interactions with Rifampicin - classic and repeated.
Special stains in Pathology - Congo red, PAS, Ziehl-Neelsen, Silver stain - know what each detects.
Autoantibodies in rheumatology - SLE, RA, Scleroderma - one question guaranteed.
Triad/Pentad associations - Charcot's triad, Virchow's triad, etc. - direct recall questions.

Want me to generate 25 more MCQs focused on any specific weak area, or create a downloadable PDF of this practice set? 📄

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