CMS 2020 Paper I \u2013 Part 1 (Q1\u2013Q30)<\/title>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Playfair+Display:wght@600;700&family=Source+Serif+4:ital,wght@0,300;0,400;0,600;1,400&display=swap\" rel=\"stylesheet\">\n<style>\n\/* \u2500\u2500 Namespace: cms20p1a \u2500\u2500 *\/\n#cms20p1a *,#cms20p1a *::before,#cms20p1a *::after{box-sizing:border-box;margin:0;padding:0}\n\n#cms20p1a{\n --ter:#C0603A;\n --ter-light:#e8825f;\n --ter-pale:#fdf1ec;\n --teal:#2A7A6F;\n --teal-light:#3da394;\n --teal-pale:#eaf4f3;\n --ink:#1a1a1a;\n --ink-mid:#444;\n --ink-soft:#777;\n --line:#e0d8d4;\n --bg:#fdfaf8;\n --white:#ffffff;\n --correct:#1e6f46;\n --correct-bg:#eaf7ef;\n --wrong:#b83232;\n --wrong-bg:#fdf0f0;\n --radius:10px;\n --wp-header-height:70px;\n font-family:'Source Serif 4',Georgia,serif;\n font-size:16px;\n color:var(--ink);\n background:var(--bg);\n line-height:1.7;\n padding:0 0 48px;\n}\n\n#cms20p1a .cq-header{\n background:var(--teal);\n color:var(--white);\n 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.cq-band-s{background:var(--teal-pale);color:var(--teal)}\n\n#cms20p1a .cq-retry-btn{\n margin-top:22px;\n background:transparent;\n border:2px solid var(--teal);\n color:var(--teal);\n border-radius:8px;\n padding:10px 28px;\n font-family:'Playfair Display',serif;\n font-size:0.95rem;\n font-weight:700;\n cursor:pointer;\n transition:background 0.2s,color 0.2s;\n}\n#cms20p1a .cq-retry-btn:hover{background:var(--teal);color:var(--white)}\n\n@media(max-width:480px){\n #cms20p1a .cq-header h1{font-size:1.15rem}\n #cms20p1a .cq-qtext{font-size:0.88rem}\n #cms20p1a .cq-opt-text{font-size:0.84rem}\n}\n<\/style>\n<\/head>\n<body>\n\n<div id=\"cms20p1a\">\n\n <div class=\"cq-header\">\n <h1>Combined Medical Services Examination 2020<br>Paper I \u00b7 Part 1<\/h1>\n <p>Cardiology \u00b7 Respiratory \u00b7 Gastroenterology<\/p>\n <div class=\"cq-meta\">\n <span class=\"cq-badge\">Questions 1 \u2013 30<\/span>\n <span class=\"cq-badge\">Options reshuffled<\/span>\n <\/div>\n <\/div>\n\n <div class=\"cq-progress-wrap\">\n <div class=\"cq-progress-info\">\n <span id=\"cms20p1a-answered\">0 of 30 answered<\/span>\n <span id=\"cms20p1a-pct\">0%<\/span>\n <\/div>\n <div class=\"cq-progress-bar\">\n <div class=\"cq-progress-fill\" id=\"cms20p1a-fill\"><\/div>\n <\/div>\n <\/div>\n\n <div class=\"cq-body\">\n <div id=\"cms20p1a-questions\"><\/div>\n\n <div class=\"cq-submit-wrap\">\n <button class=\"cq-btn\" id=\"cms20p1a-submit\" disabled>Submit Answers<\/button>\n <\/div>\n\n <div class=\"cq-score\" id=\"cms20p1a-score\">\n <div class=\"cq-score-ring\" id=\"cms20p1a-ring\">\n <div class=\"cq-ring-inner\">\n <span class=\"cq-ring-pct\" id=\"cms20p1a-ring-pct\">0%<\/span>\n <span class=\"cq-ring-sub\">score<\/span>\n <\/div>\n <\/div>\n <h2>Your Result<\/h2>\n <div class=\"cq-net-line\" id=\"cms20p1a-net-line\"><\/div>\n <div class=\"cq-verdict\" id=\"cms20p1a-verdict\"><\/div>\n <div class=\"cq-score-bands\">\n <span class=\"cq-band cq-band-c\" id=\"cms20p1a-ct-c\"><\/span>\n <span class=\"cq-band cq-band-w\" id=\"cms20p1a-ct-w\"><\/span>\n <span class=\"cq-band cq-band-s\" id=\"cms20p1a-ct-s\"><\/span>\n <\/div>\n <button class=\"cq-retry-btn\" id=\"cms20p1a-retry\">Retry Quiz<\/button>\n <\/div>\n <\/div>\n\n<\/div>\n\n<script>\n(function(){\n 'use strict';\n\n const NS = 'cms20p1a';\n const TOTAL = 30;\n const MAX = TOTAL * 4; \/\/ 120\n\n const QUESTIONS = [\n {\n id:1,\n stem:'A chronic alcoholic develops a paroxysm of palpitations after alcohol binge. Which of the following arrhythmia is most likely?',\n correct:'Atrial fibrillation',\n options:['Ventricular fibrillation','Ventricular premature complex','Atrial flutter','Atrial fibrillation'],\n exp:'Holiday heart syndrome \u2014 acute alcohol ingestion precipitates atrial fibrillation in otherwise healthy individuals. It is the classic arrhythmia associated with binge drinking.'\n },\n {\n id:2,\n stem:'An elderly man with history of Diabetes mellitus and Coronary Artery Disease comes for follow-up with complaints of muscle pains. Which one of the following drugs could be the most likely cause?',\n correct:'Atorvastatin',\n options:['Aspirin','Glimepiride','Enalapril','Atorvastatin'],\n exp:'Statins (e.g., atorvastatin) cause myopathy and myalgias \u2014 the most significant musculoskeletal adverse effect. None of the other listed drugs typically cause muscle pain.'\n },\n {\n id:3,\n stem:\"A 40-year-old lady presents with sudden onset chest pain. Chest X-ray shows bilateral pneumothorax. Examination reveals long arms, legs and fingers (arachnodactyly), scoliosis, high arched palate, joint hypermobility, and a pansystolic murmur at the cardiac apex. Which one of the following diseases is most likely?\",\n correct:\"Marfan's syndrome\",\n options:[\"Takayasu's arteritis\",\"Raynaud's syndrome\",\"Marfan's syndrome\",'Rheumatic heart disease \u2014 Mitral regurgitation'],\n exp:\"Marfan's syndrome is a connective tissue disorder with arachnodactyly, aortic root dilatation, lens subluxation, spontaneous pneumothorax, and mitral valve prolapse\/regurgitation. The body habitus described is pathognomonic.\"\n },\n {\n id:4,\n stem:'All of the following are indications for treadmill testing \/ exercise-testing EXCEPT:',\n correct:'To evaluate the treatment efficacy of antianginal drugs',\n options:['To confirm the diagnosis of angina','To evaluate stable angina','To assess outcome after coronary revascularization','To evaluate the treatment efficacy of antianginal drugs'],\n exp:'Standard indications for exercise testing include diagnosis of CAD, functional assessment, and post-revascularization evaluation. Evaluating antianginal drug efficacy is not a recognised standard indication for TMT.'\n },\n {\n id:5,\n stem:\"Kussmaul's sign is present in all of the following conditions EXCEPT:\",\n correct:'Hypertrophic Cardiomyopathy',\n options:['Massive Pulmonary Embolism','Restrictive Cardiomyopathy','Hypertrophic Cardiomyopathy','Right Ventricular Infarction'],\n exp:\"Kussmaul's sign (paradoxical rise in JVP on inspiration) is seen in constrictive pericarditis, restrictive cardiomyopathy, RV infarction, and massive PE. It is NOT a feature of hypertrophic cardiomyopathy.\"\n },\n {\n id:6,\n stem:'Which one of the following is NOT a common cause of atrial fibrillation?',\n correct:'Hypothyroidism',\n options:['Mitral regurgitation','Hypothyroidism','Hypertension','Acute myocardial infarction'],\n exp:'Hyperthyroidism \u2014 not hypothyroidism \u2014 is a well-known cause of AF. Hypothyroidism typically causes bradycardia. Mitral valve disease, hypertension, and MI are all recognised precipitants.'\n },\n {\n id:7,\n stem:'In an ECG recording, P wave is produced by:',\n correct:'Atrial depolarisation',\n options:['Atrial depolarisation','Atrial repolarisation','Ventricular depolarisation','Ventricular repolarisation'],\n exp:'The P wave represents atrial depolarisation. Atrial repolarisation is buried within the QRS. Ventricular depolarisation = QRS complex; ventricular repolarisation = T wave.'\n },\n {\n id:8,\n stem:'Which one of the following modalities is NOT used in the treatment of ventricular tachycardia?',\n correct:'Injection Adenosine',\n options:['DC Cardioversion','Injection Lignocaine','Injection Amiodarone','Injection Adenosine'],\n exp:'Adenosine terminates supraventricular tachycardia (SVT) \u2014 it has no role in VT. DC cardioversion, lignocaine, and amiodarone are all used in acute management of ventricular tachycardia.'\n },\n {\n id:9,\n stem:'Which one of the following drugs is a Direct Renin Inhibitor?',\n correct:'Aliskiren',\n options:['Benedipine','Azilsartan','Aliskiren','Lisinopril'],\n exp:'Aliskiren is the only approved direct renin inhibitor. Benedipine is a calcium channel blocker, azilsartan is an ARB, and lisinopril is an ACE inhibitor.'\n },\n {\n id:10,\n stem:'All of the following are causes of systolic hypertension with wide pulse pressure EXCEPT:',\n correct:'Aortic stenosis',\n options:['Aortic regurgitation','Thyrotoxicosis','Patent ductus arteriosus','Aortic stenosis'],\n exp:'Aortic stenosis causes a narrow pulse pressure due to reduced stroke volume and outflow obstruction. AR, thyrotoxicosis, and PDA all increase stroke volume, producing wide pulse pressure.'\n },\n {\n id:11,\n stem:'Signet-ring sign on CT chest is suggestive of:',\n correct:'Bronchiectasis',\n options:['Bronchiectasis','Active alveolitis','Aspergilloma','Sarcoidosis'],\n exp:'The signet-ring sign on HRCT represents a dilated bronchus (ring) alongside its companion pulmonary artery branch (the signet stone) \u2014 pathognomonic of bronchiectasis.'\n },\n {\n id:12,\n stem:'Oral corticosteroids are best introduced in the treatment of chronic bronchial asthma when it is:',\n correct:'Severe persistent',\n options:['Mild persistent','Moderate persistent','Severe persistent','Very severe persistent'],\n exp:'Per GINA guidelines, oral corticosteroids are step-5 therapy, introduced in severe persistent asthma uncontrolled on high-dose ICS plus long-acting bronchodilators.'\n },\n {\n id:13,\n stem:'An 18-year-old male has insulin-dependent diabetes, malabsorption syndrome and bilateral upper lobe bronchiectasis. A diagnostic work-up will include all EXCEPT:',\n correct:'Lung biopsy',\n options:['24 hour fecal fat estimation','CT chest','Lung biopsy','DNA sequencing study'],\n exp:'This triad (IDDM, malabsorption, upper lobe bronchiectasis) points to Cystic Fibrosis, confirmed by sweat chloride test and\/or DNA sequencing \u2014 not lung biopsy, which is invasive and unnecessary here.'\n },\n {\n id:14,\n stem:\"Which one of the following antigens is commonly associated with causation of Farmer's lung?\",\n correct:'Actinomycetes',\n options:['Penicillium','Actinomycetes','Aspergillus','Candida'],\n exp:\"Farmer's lung is a hypersensitivity pneumonitis caused by thermophilic Actinomycetes (Saccharopolyspora rectivirgula) in mouldy hay \u2014 the classic example of extrinsic allergic alveolitis.\"\n },\n {\n id:15,\n stem:'The GeneXpert test used for MTB detection has the additional advantage of detection of which of the following?',\n correct:'Rifampicin resistance',\n options:['INH resistance','Rifampicin resistance','Multi drug resistance','Ethambutol resistance'],\n exp:'GeneXpert MTB\/RIF simultaneously detects Mycobacterium tuberculosis AND rifampicin resistance (via rpoB gene mutations) in a single automated cartridge. INH and ethambutol resistance require additional assays.'\n },\n {\n id:16,\n stem:'The most common cause of chronic type II respiratory failure is:',\n correct:'Severe COPD',\n options:['Severe pneumonia','Severe COPD','Severe bronchial asthma','Severe pulmonary thromboembolism'],\n exp:'Severe COPD with progressive airflow limitation and blunted hypercapnic ventilatory drive is the most common cause of chronic type II (hypercapnic) respiratory failure.'\n },\n {\n id:17,\n stem:'The most frequent symptom in respiratory diseases is:',\n correct:'Cough',\n options:['Breathlessness','Chest pain','Hemoptysis','Cough'],\n exp:'Cough is the single most common presenting symptom across all respiratory diseases \u2014 acute and chronic. Breathlessness is second. Hemoptysis, though alarming, is comparatively infrequent.'\n },\n {\n id:18,\n stem:'A 26-year-old lady is labelled as acute severe asthma by the emergency physician. Which one of the following is unlikely to be a part of the prescription?',\n correct:'Anti-leukotrienes',\n options:['Albuterol','Anti-leukotrienes','Aminophylline','Magnesium sulfate'],\n exp:'Anti-leukotrienes (e.g., montelukast) are controller drugs for chronic asthma management \u2014 not for acute severe attacks. Albuterol, aminophylline, and magnesium sulfate are all used in the acute setting.'\n },\n {\n id:19,\n stem:'Consider the following statements with regard to respiratory examination:\\n1. Change in note when patient phonates \"EEE\" (Egophony) is characteristic of interstitial fibrosis\\n2. Whispered pectoriloquy is characteristic of lung consolidation\\n3. Monophonic wheeze is characteristic of asthma\\n4. Hyper-resonant note on percussion is characteristic of pneumothorax\\nWhich of the above statements are correct?',\n correct:'2 and 4 only',\n options:['1 and 3','2 and 4 only','1, 2 and 4','2, 3 and 4'],\n exp:'Egophony is a sign of consolidation, not interstitial fibrosis (statement 1 false). Monophonic wheeze indicates single large airway obstruction; polyphonic wheeze is seen in asthma (statement 3 false). Statements 2 and 4 are correct.'\n },\n {\n id:20,\n stem:'All of the following are causes of exudative pleural effusion EXCEPT:',\n correct:'SVC obstruction',\n options:['SVC obstruction','Fungal infection','SLE','Meig syndrome'],\n exp:\"SVC obstruction raises venous hydrostatic pressure, producing a transudative effusion. Fungal infections, SLE, and Meig's syndrome all cause exudative effusions.\"\n },\n {\n id:21,\n stem:'Which one of the following is NOT true about Ghrelin?',\n correct:'It decreases gastric emptying',\n options:['It stimulates appetite','It decreases gastric emptying','It increases acid secretion','Fasting increases its secretion'],\n exp:'Ghrelin stimulates appetite, increases gastric acid secretion, and rises with fasting. It ACCELERATES gastric emptying \u2014 the statement that it decreases gastric emptying is false.'\n },\n {\n id:22,\n stem:'Fecal elastase test is used for diagnosing which one of the following conditions?',\n correct:'Pancreatic dysfunction',\n options:['Lactose intolerance','Mucosal inflammation','Bile acid secretory defects','Pancreatic dysfunction'],\n exp:'Fecal elastase-1 (FE-1) is a pancreatic enzyme stable during gut transit. Low fecal levels indicate exocrine pancreatic insufficiency \u2014 a non-invasive marker of pancreatic dysfunction.'\n },\n {\n id:23,\n stem:'The recent classification system for listing a patient as a candidate for liver transplantation is:',\n correct:'MELD score',\n options:['Child Pugh score','APACHE score','MELD score','Metavir score'],\n exp:'MELD (Model for End-stage Liver Disease) score \u2014 based on bilirubin, creatinine, and INR \u2014 is the current standard for prioritising liver transplant candidates. Child-Pugh is older; Metavir scores fibrosis on biopsy.'\n },\n {\n id:24,\n stem:'The blood supply of liver consists of:',\n correct:'80% portal vein and 20% hepatic artery',\n options:['50% hepatic artery and 50% portal vein','80% portal vein and 20% hepatic artery','80% hepatic artery and 20% portal vein','70% hepatic artery and 30% portal vein'],\n exp:\"The liver receives ~75\u201380% of its blood supply from the portal vein and 20\u201325% from the hepatic artery. Despite its smaller volume contribution, the hepatic artery supplies ~50% of the liver's oxygen.\"\n },\n {\n id:25,\n stem:'All of the following conditions are associated with glomerulonephritis with low complement level EXCEPT:',\n correct:'IgA nephropathy',\n options:['Subacute bacterial endocarditis','IgA nephropathy','Systemic lupus erythematosus','Cryoglobulinaemia'],\n exp:\"IgA nephropathy (Berger's disease) is characteristically associated with NORMAL serum complement levels. SBE, SLE, and cryoglobulinaemia all activate complement, causing hypocomplementaemia.\"\n },\n {\n id:26,\n stem:'Consider the following statements with regard to oral aphthous ulcers:\\n1. They are superficial and painful\\n2. They may occur in women just prior to menstruation\\n3. Oral glucocorticoids may be needed for severe, recurrent cases\\n4. They are pre-malignant and progress to squamous cell carcinoma\\nWhich of the above statements are correct?',\n correct:'1, 2 and 3 only',\n options:['1 and 4 only','2 and 3 only','1, 2 and 3 only','1, 2, 3 and 4'],\n exp:'Aphthous ulcers are benign \u2014 NOT pre-malignant (statement 4 false). They are superficial, painful, hormonally influenced, and may require systemic steroids in severe recurrent cases. Statements 1, 2, and 3 are all correct.'\n },\n {\n id:27,\n stem:\"Which one of the following statements about Barrett's oesophagus is NOT correct?\",\n correct:'Normal columnar cells lining the lower oesophagus are replaced by squamous cells',\n options:['It is a pre-malignant condition','Normal squamous cells lining the lower oesophagus are replaced by columnar cells','Normal columnar cells lining the lower oesophagus are replaced by squamous cells','It is an adaptive response to chronic gastro-oesophageal reflux'],\n exp:\"Barrett's oesophagus is replacement of normal squamous epithelium by columnar (intestinal metaplasia) epithelium in the lower oesophagus \u2014 an adaptive response to chronic acid exposure. Option (c) reverses this direction and is therefore incorrect.\"\n },\n {\n id:28,\n stem:'The most common cause of acute hepatitis outbreaks in India is:',\n correct:'Hepatitis E',\n options:['Hepatitis E','Hepatitis C','Hepatitis B','Hepatitis A'],\n exp:'Hepatitis E virus (HEV), transmitted via the faecal-oral route through contaminated water, is the leading cause of acute epidemic hepatitis in India. It carries high mortality in pregnant women.'\n },\n {\n id:29,\n stem:'Spontaneous oesophageal perforation after a bout of forceful vomiting or retching is characteristically seen in which one of the following conditions?',\n correct:\"Boerhaave's syndrome\",\n options:[\"Menetrier's disease\",\"Boerhaave's syndrome\",'Achalasia of the oesophagus',\"Barrett's oesophagus\"],\n exp:\"Boerhaave's syndrome is spontaneous transmural rupture of the oesophagus following a sudden rise in intraluminal pressure \u2014 classically after forceful vomiting or retching. It is a surgical emergency.\"\n },\n {\n id:30,\n stem:'Eradication of Helicobacter pylori infection may prove beneficial in the following extragastric disorders EXCEPT:',\n correct:'Acute glomerulonephritis',\n options:['Unexplained vitamin B12 deficiency','Idiopathic thrombocytopenic purpura','Iron deficiency anaemia without gastro-intestinal bleeding','Acute glomerulonephritis'],\n exp:'H. pylori eradication has demonstrated benefit in ITP, unexplained B12 deficiency, and iron deficiency anaemia. 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id=\"cms20p1a\">\n\n <div class=\"cq-header\">\n <h1>Combined Medical Services Examination 2020<br>Paper I \u00b7 Part 1<\/h1>\n <p>Cardiology \u00b7 Respiratory \u00b7 Gastroenterology<\/p>\n <div class=\"cq-meta\">\n <span class=\"cq-badge\">Questions 1 \u2013 30<\/span>\n <span class=\"cq-badge\">Options reshuffled<\/span>\n <\/div>\n <\/div>\n\n <div class=\"cq-progress-wrap\">\n <div class=\"cq-progress-info\">\n <span id=\"cms20p1a-answered\">0 of 30 answered<\/span>\n <span id=\"cms20p1a-pct\">0%<\/span>\n <\/div>\n <div class=\"cq-progress-bar\">\n <div class=\"cq-progress-fill\" id=\"cms20p1a-fill\"><\/div>\n <\/div>\n <\/div>\n\n <div class=\"cq-body\">\n <div id=\"cms20p1a-questions\"><\/div>\n\n <div class=\"cq-submit-wrap\">\n <button class=\"cq-btn\" id=\"cms20p1a-submit\" disabled>Submit Answers<\/button>\n <\/div>\n\n <div class=\"cq-score\" id=\"cms20p1a-score\">\n <div class=\"cq-score-ring\" id=\"cms20p1a-ring\">\n <div class=\"cq-ring-inner\">\n <span class=\"cq-ring-pct\" id=\"cms20p1a-ring-pct\">0%<\/span>\n <span class=\"cq-ring-sub\">score<\/span>\n <\/div>\n <\/div>\n <h2>Your Result<\/h2>\n <div class=\"cq-net-line\" id=\"cms20p1a-net-line\"><\/div>\n <div class=\"cq-verdict\" id=\"cms20p1a-verdict\"><\/div>\n <div class=\"cq-score-bands\">\n <span class=\"cq-band cq-band-c\" id=\"cms20p1a-ct-c\"><\/span>\n <span class=\"cq-band cq-band-w\" id=\"cms20p1a-ct-w\"><\/span>\n <span class=\"cq-band cq-band-s\" id=\"cms20p1a-ct-s\"><\/span>\n <\/div>\n <button class=\"cq-retry-btn\" id=\"cms20p1a-retry\">Retry Quiz<\/button>\n <\/div>\n <\/div>\n\n<\/div>\n\n<script>\n(function(){\n 'use strict';\n\n const NS = 'cms20p1a';\n const TOTAL = 30;\n const MAX = TOTAL * 4; \/\/ 120\n\n const QUESTIONS = [\n {\n id:1,\n stem:'A chronic alcoholic develops a paroxysm of palpitations after alcohol binge. Which of the following arrhythmia is most likely?',\n correct:'Atrial fibrillation',\n options:['Ventricular fibrillation','Ventricular premature complex','Atrial flutter','Atrial fibrillation'],\n exp:'Holiday heart syndrome \u2014 acute alcohol ingestion precipitates atrial fibrillation in otherwise healthy individuals. It is the classic arrhythmia associated with binge drinking.'\n },\n {\n id:2,\n stem:'An elderly man with history of Diabetes mellitus and Coronary Artery Disease comes for follow-up with complaints of muscle pains. Which one of the following drugs could be the most likely cause?',\n correct:'Atorvastatin',\n options:['Aspirin','Glimepiride','Enalapril','Atorvastatin'],\n exp:'Statins (e.g., atorvastatin) cause myopathy and myalgias \u2014 the most significant musculoskeletal adverse effect. None of the other listed drugs typically cause muscle pain.'\n },\n {\n id:3,\n stem:\"A 40-year-old lady presents with sudden onset chest pain. Chest X-ray shows bilateral pneumothorax. Examination reveals long arms, legs and fingers (arachnodactyly), scoliosis, high arched palate, joint hypermobility, and a pansystolic murmur at the cardiac apex. Which one of the following diseases is most likely?\",\n correct:\"Marfan's syndrome\",\n options:[\"Takayasu's arteritis\",\"Raynaud's syndrome\",\"Marfan's syndrome\",'Rheumatic heart disease \u2014 Mitral regurgitation'],\n exp:\"Marfan's syndrome is a connective tissue disorder with arachnodactyly, aortic root dilatation, lens subluxation, spontaneous pneumothorax, and mitral valve prolapse\/regurgitation. The body habitus described is pathognomonic.\"\n },\n {\n id:4,\n stem:'All of the following are indications for treadmill testing \/ exercise-testing EXCEPT:',\n correct:'To evaluate the treatment efficacy of antianginal drugs',\n options:['To confirm the diagnosis of angina','To evaluate stable angina','To assess outcome after coronary revascularization','To evaluate the treatment efficacy of antianginal drugs'],\n exp:'Standard indications for exercise testing include diagnosis of CAD, functional assessment, and post-revascularization evaluation. Evaluating antianginal drug efficacy is not a recognised standard indication for TMT.'\n },\n {\n id:5,\n stem:\"Kussmaul's sign is present in all of the following conditions EXCEPT:\",\n correct:'Hypertrophic Cardiomyopathy',\n options:['Massive Pulmonary Embolism','Restrictive Cardiomyopathy','Hypertrophic Cardiomyopathy','Right Ventricular Infarction'],\n exp:\"Kussmaul's sign (paradoxical rise in JVP on inspiration) is seen in constrictive pericarditis, restrictive cardiomyopathy, RV infarction, and massive PE. It is NOT a feature of hypertrophic cardiomyopathy.\"\n },\n {\n id:6,\n stem:'Which one of the following is NOT a common cause of atrial fibrillation?',\n correct:'Hypothyroidism',\n options:['Mitral regurgitation','Hypothyroidism','Hypertension','Acute myocardial infarction'],\n exp:'Hyperthyroidism \u2014 not hypothyroidism \u2014 is a well-known cause of AF. Hypothyroidism typically causes bradycardia. Mitral valve disease, hypertension, and MI are all recognised precipitants.'\n },\n {\n id:7,\n stem:'In an ECG recording, P wave is produced by:',\n correct:'Atrial depolarisation',\n options:['Atrial depolarisation','Atrial repolarisation','Ventricular depolarisation','Ventricular repolarisation'],\n exp:'The P wave represents atrial depolarisation. Atrial repolarisation is buried within the QRS. Ventricular depolarisation = QRS complex; ventricular repolarisation = T wave.'\n },\n {\n id:8,\n stem:'Which one of the following modalities is NOT used in the treatment of ventricular tachycardia?',\n correct:'Injection Adenosine',\n options:['DC Cardioversion','Injection Lignocaine','Injection Amiodarone','Injection Adenosine'],\n exp:'Adenosine terminates supraventricular tachycardia (SVT) \u2014 it has no role in VT. DC cardioversion, lignocaine, and amiodarone are all used in acute management of ventricular tachycardia.'\n },\n {\n id:9,\n stem:'Which one of the following drugs is a Direct Renin Inhibitor?',\n correct:'Aliskiren',\n options:['Benedipine','Azilsartan','Aliskiren','Lisinopril'],\n exp:'Aliskiren is the only approved direct renin inhibitor. Benedipine is a calcium channel blocker, azilsartan is an ARB, and lisinopril is an ACE inhibitor.'\n },\n {\n id:10,\n stem:'All of the following are causes of systolic hypertension with wide pulse pressure EXCEPT:',\n correct:'Aortic stenosis',\n options:['Aortic regurgitation','Thyrotoxicosis','Patent ductus arteriosus','Aortic stenosis'],\n exp:'Aortic stenosis causes a narrow pulse pressure due to reduced stroke volume and outflow obstruction. AR, thyrotoxicosis, and PDA all increase stroke volume, producing wide pulse pressure.'\n },\n {\n id:11,\n stem:'Signet-ring sign on CT chest is suggestive of:',\n correct:'Bronchiectasis',\n options:['Bronchiectasis','Active alveolitis','Aspergilloma','Sarcoidosis'],\n exp:'The signet-ring sign on HRCT represents a dilated bronchus (ring) alongside its companion pulmonary artery branch (the signet stone) \u2014 pathognomonic of bronchiectasis.'\n },\n {\n id:12,\n stem:'Oral corticosteroids are best introduced in the treatment of chronic bronchial asthma when it is:',\n correct:'Severe persistent',\n options:['Mild persistent','Moderate persistent','Severe persistent','Very severe persistent'],\n exp:'Per GINA guidelines, oral corticosteroids are step-5 therapy, introduced in severe persistent asthma uncontrolled on high-dose ICS plus long-acting bronchodilators.'\n },\n {\n id:13,\n stem:'An 18-year-old male has insulin-dependent diabetes, malabsorption syndrome and bilateral upper lobe bronchiectasis. A diagnostic work-up will include all EXCEPT:',\n correct:'Lung biopsy',\n options:['24 hour fecal fat estimation','CT chest','Lung biopsy','DNA sequencing study'],\n exp:'This triad (IDDM, malabsorption, upper lobe bronchiectasis) points to Cystic Fibrosis, confirmed by sweat chloride test and\/or DNA sequencing \u2014 not lung biopsy, which is invasive and unnecessary here.'\n },\n {\n id:14,\n stem:\"Which one of the following antigens is commonly associated with causation of Farmer's lung?\",\n correct:'Actinomycetes',\n options:['Penicillium','Actinomycetes','Aspergillus','Candida'],\n exp:\"Farmer's lung is a hypersensitivity pneumonitis caused by thermophilic Actinomycetes (Saccharopolyspora rectivirgula) in mouldy hay \u2014 the classic example of extrinsic allergic alveolitis.\"\n },\n {\n id:15,\n stem:'The GeneXpert test used for MTB detection has the additional advantage of detection of which of the following?',\n correct:'Rifampicin resistance',\n options:['INH resistance','Rifampicin resistance','Multi drug resistance','Ethambutol resistance'],\n exp:'GeneXpert MTB\/RIF simultaneously detects Mycobacterium tuberculosis AND rifampicin resistance (via rpoB gene mutations) in a single automated cartridge. INH and ethambutol resistance require additional assays.'\n },\n {\n id:16,\n stem:'The most common cause of chronic type II respiratory failure is:',\n correct:'Severe COPD',\n options:['Severe pneumonia','Severe COPD','Severe bronchial asthma','Severe pulmonary thromboembolism'],\n exp:'Severe COPD with progressive airflow limitation and blunted hypercapnic ventilatory drive is the most common cause of chronic type II (hypercapnic) respiratory failure.'\n },\n {\n id:17,\n stem:'The most frequent symptom in respiratory diseases is:',\n correct:'Cough',\n options:['Breathlessness','Chest pain','Hemoptysis','Cough'],\n exp:'Cough is the single most common presenting symptom across all respiratory diseases \u2014 acute and chronic. Breathlessness is second. Hemoptysis, though alarming, is comparatively infrequent.'\n },\n {\n id:18,\n stem:'A 26-year-old lady is labelled as acute severe asthma by the emergency physician. Which one of the following is unlikely to be a part of the prescription?',\n correct:'Anti-leukotrienes',\n options:['Albuterol','Anti-leukotrienes','Aminophylline','Magnesium sulfate'],\n exp:'Anti-leukotrienes (e.g., montelukast) are controller drugs for chronic asthma management \u2014 not for acute severe attacks. Albuterol, aminophylline, and magnesium sulfate are all used in the acute setting.'\n },\n {\n id:19,\n stem:'Consider the following statements with regard to respiratory examination:\\n1. Change in note when patient phonates \"EEE\" (Egophony) is characteristic of interstitial fibrosis\\n2. Whispered pectoriloquy is characteristic of lung consolidation\\n3. Monophonic wheeze is characteristic of asthma\\n4. Hyper-resonant note on percussion is characteristic of pneumothorax\\nWhich of the above statements are correct?',\n correct:'2 and 4 only',\n options:['1 and 3','2 and 4 only','1, 2 and 4','2, 3 and 4'],\n exp:'Egophony is a sign of consolidation, not interstitial fibrosis (statement 1 false). Monophonic wheeze indicates single large airway obstruction; polyphonic wheeze is seen in asthma (statement 3 false). Statements 2 and 4 are correct.'\n },\n {\n id:20,\n stem:'All of the following are causes of exudative pleural effusion EXCEPT:',\n correct:'SVC obstruction',\n options:['SVC obstruction','Fungal infection','SLE','Meig syndrome'],\n exp:\"SVC obstruction raises venous hydrostatic pressure, producing a transudative effusion. Fungal infections, SLE, and Meig's syndrome all cause exudative effusions.\"\n },\n {\n id:21,\n stem:'Which one of the following is NOT true about Ghrelin?',\n correct:'It decreases gastric emptying',\n options:['It stimulates appetite','It decreases gastric emptying','It increases acid secretion','Fasting increases its secretion'],\n exp:'Ghrelin stimulates appetite, increases gastric acid secretion, and rises with fasting. It ACCELERATES gastric emptying \u2014 the statement that it decreases gastric emptying is false.'\n },\n {\n id:22,\n stem:'Fecal elastase test is used for diagnosing which one of the following conditions?',\n correct:'Pancreatic dysfunction',\n options:['Lactose intolerance','Mucosal inflammation','Bile acid secretory defects','Pancreatic dysfunction'],\n exp:'Fecal elastase-1 (FE-1) is a pancreatic enzyme stable during gut transit. Low fecal levels indicate exocrine pancreatic insufficiency \u2014 a non-invasive marker of pancreatic dysfunction.'\n },\n {\n id:23,\n stem:'The recent classification system for listing a patient as a candidate for liver transplantation is:',\n correct:'MELD score',\n options:['Child Pugh score','APACHE score','MELD score','Metavir score'],\n exp:'MELD (Model for End-stage Liver Disease) score \u2014 based on bilirubin, creatinine, and INR \u2014 is the current standard for prioritising liver transplant candidates. Child-Pugh is older; Metavir scores fibrosis on biopsy.'\n },\n {\n id:24,\n stem:'The blood supply of liver consists of:',\n correct:'80% portal vein and 20% hepatic artery',\n options:['50% hepatic artery and 50% portal vein','80% portal vein and 20% hepatic artery','80% hepatic artery and 20% portal vein','70% hepatic artery and 30% portal vein'],\n exp:\"The liver receives ~75\u201380% of its blood supply from the portal vein and 20\u201325% from the hepatic artery. Despite its smaller volume contribution, the hepatic artery supplies ~50% of the liver's oxygen.\"\n },\n {\n id:25,\n stem:'All of the following conditions are associated with glomerulonephritis with low complement level EXCEPT:',\n correct:'IgA nephropathy',\n options:['Subacute bacterial endocarditis','IgA nephropathy','Systemic lupus erythematosus','Cryoglobulinaemia'],\n exp:\"IgA nephropathy (Berger's disease) is characteristically associated with NORMAL serum complement levels. SBE, SLE, and cryoglobulinaemia all activate complement, causing hypocomplementaemia.\"\n },\n {\n id:26,\n stem:'Consider the following statements with regard to oral aphthous ulcers:\\n1. They are superficial and painful\\n2. They may occur in women just prior to menstruation\\n3. Oral glucocorticoids may be needed for severe, recurrent cases\\n4. They are pre-malignant and progress to squamous cell carcinoma\\nWhich of the above statements are correct?',\n correct:'1, 2 and 3 only',\n options:['1 and 4 only','2 and 3 only','1, 2 and 3 only','1, 2, 3 and 4'],\n exp:'Aphthous ulcers are benign \u2014 NOT pre-malignant (statement 4 false). They are superficial, painful, hormonally influenced, and may require systemic steroids in severe recurrent cases. Statements 1, 2, and 3 are all correct.'\n },\n {\n id:27,\n stem:\"Which one of the following statements about Barrett's oesophagus is NOT correct?\",\n correct:'Normal columnar cells lining the lower oesophagus are replaced by squamous cells',\n options:['It is a pre-malignant condition','Normal squamous cells lining the lower oesophagus are replaced by columnar cells','Normal columnar cells lining the lower oesophagus are replaced by squamous cells','It is an adaptive response to chronic gastro-oesophageal reflux'],\n exp:\"Barrett's oesophagus is replacement of normal squamous epithelium by columnar (intestinal metaplasia) epithelium in the lower oesophagus \u2014 an adaptive response to chronic acid exposure. Option (c) reverses this direction and is therefore incorrect.\"\n },\n {\n id:28,\n stem:'The most common cause of acute hepatitis outbreaks in India is:',\n correct:'Hepatitis E',\n options:['Hepatitis E','Hepatitis C','Hepatitis B','Hepatitis A'],\n exp:'Hepatitis E virus (HEV), transmitted via the faecal-oral route through contaminated water, is the leading cause of acute epidemic hepatitis in India. It carries high mortality in pregnant women.'\n },\n {\n id:29,\n stem:'Spontaneous oesophageal perforation after a bout of forceful vomiting or retching is characteristically seen in which one of the following conditions?',\n correct:\"Boerhaave's syndrome\",\n options:[\"Menetrier's disease\",\"Boerhaave's syndrome\",'Achalasia of the oesophagus',\"Barrett's oesophagus\"],\n exp:\"Boerhaave's syndrome is spontaneous transmural rupture of the oesophagus following a sudden rise in intraluminal pressure \u2014 classically after forceful vomiting or retching. It is a surgical emergency.\"\n },\n {\n id:30,\n stem:'Eradication of Helicobacter pylori infection may prove beneficial in the following extragastric disorders EXCEPT:',\n correct:'Acute glomerulonephritis',\n options:['Unexplained vitamin B12 deficiency','Idiopathic thrombocytopenic purpura','Iron deficiency anaemia without gastro-intestinal bleeding','Acute glomerulonephritis'],\n exp:'H. pylori eradication has demonstrated benefit in ITP, unexplained B12 deficiency, and iron deficiency anaemia. 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