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Can you tell me all the question that come in upsc cms previous year paper from respiration topic ??

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UPSC CMS previous year paper questions respiration topic

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UPSC CMS exam respiration questions MCQ physiology biochemistry

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Here is a thorough answer based on what is publicly available about UPSC CMS previous year papers on the respiration/respiratory topic:

UPSC CMS Previous Year Questions - Respiration / Respiratory System

Important note upfront: UPSC does not officially release individual question-level breakdowns by topic on a public website. The actual PDFs of question papers are available on sites like Testbook and PW Only IAS, but no single freely accessible source compiles "all respiration questions" in one list. Below is what is confirmed from previous year paper analysis.

How Respiration Appears in UPSC CMS

Respiration/Respiratory diseases appear in Paper 1 - General Medicine section (which carries 96 questions, ~250 marks). Based on 7-year analysis (2018-2024), General Medicine accounts for ~38-40% of total marks.

Confirmed High-Frequency Respiratory Topics (from PYQ Analysis)

These are the respiratory subtopics that have repeatedly appeared in CMS papers:
Clinical/Disease-Based (General Medicine)
  1. Bronchial Asthma - diagnosis criteria, step-wise management, spirometry patterns, drugs used
  2. COPD - GOLD staging, FEV1/FVC ratio, management, exacerbations
  3. Pneumonia - community-acquired vs hospital-acquired, causative organisms, CURB-65 scoring
  4. Tuberculosis - RNTCP/NTEP regimens, drug side effects (especially INH, Rifampicin), MDR-TB management
  5. Pleural effusion - Light's criteria (exudate vs transudate), causes
  6. Pneumothorax - spontaneous vs tension, management
  7. Pulmonary Embolism - Wells score, D-dimer, CT pulmonary angiography, anticoagulation
  8. Lung Cancer - types (small cell vs non-small cell), paraneoplastic syndromes
  9. Interstitial Lung Disease / Pulmonary Fibrosis - HRCT findings, honeycomb pattern
  10. Respiratory failure - Type 1 vs Type 2, ABG interpretation
Physiology/Biochemistry of Respiration 11. Oxygen-Haemoglobin dissociation curve - Bohr effect, shifts (right/left), 2,3-DPG 12. Lung volumes and capacities - TLC, FRC, RV, tidal volume, spirometry 13. Ventilation-Perfusion (V/Q) mismatch - dead space, shunting 14. Mechanics of breathing - compliance, surfactant function, surface tension 15. Control of respiration - central/peripheral chemoreceptors, response to CO2/O2 16. Carbon dioxide transport - carbamino compounds, bicarbonate, carbonic anhydrase 17. Hypoxia types - hypoxic, anaemic, stagnant, histotoxic
Paediatric Respiratory (Paper 1 - Paediatrics section) 18. Respiratory Distress Syndrome (RDS/HMD) in neonates - surfactant deficiency 19. Acute Respiratory Infections (ARI) in children - WHO classification 20. Croup vs Epiglottitis - differentiating features
Surgery/Thoracic (Paper 2) 21. Empyema thoracis - management 22. Spontaneous pneumothorax - management steps 23. Thoracic injuries - flail chest, haemothorax

Sample Question Types (Representative of PYQ Pattern)

These reflect the actual style of questions that have appeared in CMS papers:
  • "Shift of oxygen-haemoglobin dissociation curve to right is caused by all EXCEPT:" (hypocapnia, acidosis, hyperthermia, increased 2,3-DPG)
  • "Most common cause of community-acquired pneumonia in adults is:"
  • "FEV1/FVC less than 0.7 with reduced FVC is characteristic of:"
  • "Drug of choice for Pneumocystis jirovecii pneumonia is:"
  • "Tension pneumothorax is managed by:"
  • "Surfactant is produced by:" (Type II pneumocytes)
  • "Wells criteria is used to diagnose:" (DVT/PE)
  • "Cheyne-Stokes respiration is seen in:"
  • "CURB-65 score is used to assess severity of:"
  • "Kartagener's syndrome is associated with:"

Where to Get the Actual Full Question Papers

To access the exact questions with answer keys, download the official PDFs:
These sites host all papers from 2009 to 2025 as free PDFs. You can then use Ctrl+F to search for "respir" within each PDF to quickly locate all respiratory questions in any year.

Quick Preparation Tip

For respiration, the most exam-productive topics in order of frequency are:
  1. Asthma & COPD (spirometry + management)
  2. Tuberculosis (drug regimens - very high yield)
  3. O2-Hb dissociation curve (pure physiology - frequently tested)
  4. Pneumonia (organisms + CURB-65)
  5. Pulmonary Embolism (investigations + scoring)
If you want me to go deeper into any specific subtopic (e.g., all CMS questions on COPD, or all physiology-of-breathing MCQs), just let me know and I can build a targeted question bank for that area.
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Please tell me the answer again

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I can see this is a First MBBS (New Scheme - 2024) Main Examination, July 2026 - Physiology Paper I question paper, not a UPSC CMS paper. The image is quite small and the text is partially blurry, but I was able to extract the content. Let me now provide all the answers to the questions visible in the paper.

First MBBS Physiology Paper I - July 2026 (1161-I)

Time: 3 Hours | Maximum Marks: 100

SECTION A - Answer the Following (20×1=20)

Q.1
1) A 23-year-old female comes with complaints of decreased weight, sweating and tremor. BP: 160/90 mmHg, pulse: 120/min. Exophthalmos is seen. Identify the condition.
  • A. Graves disease ✓ (Correct Answer: A - Graves disease)
  • B. Cretinism
  • C. Myxedema
  • D. Addison disease
Explanation: The combination of weight loss, sweating, tremor, tachycardia, hypertension, and exophthalmos is classic for Graves' disease (autoimmune hyperthyroidism).
2) A 55-year-old male comes to OPD with polyuria, polyphagia, polydipsia. Diagnosed as Diabetes Mellitus. To know long-term control of blood sugar, investigation required is:
  • A. Blood sugar fasting
  • B. Blood sugar random
  • C. HbA1c ✓ (Correct Answer)
  • D. Blood sugar postprandial
Explanation: HbA1c reflects average blood glucose over the past 2-3 months and is the standard for long-term glycemic control monitoring.
3) A 75-year-old male comes with difficulty in initiating movement, rigidity and resting tremor. On examination, festinant gait is seen. Which part of brain is involved?
  • A. Subthalamic nucleus (marked/answered)
  • B. Globus pallidus
  • C. Striatum
  • D. (other option)
Correct Answer: The described features (resting tremor, rigidity, festinant gait, bradykinesia) are classic Parkinson's disease - primarily involving the Substantia nigra (dopaminergic neurons). Among the options, the basal ganglia circuit is involved.
4) A 55-year-old post-menopausal woman advised for blood investigation for hormonal analysis. Which of the following finding is seen in above case?
  • A. ↑ FSH
  • B. ↑ LH
  • C. ↓ Estrogen
  • D. ↑ Progesterone
Correct Answer: A & C - In menopause, there is elevated FSH (due to loss of negative feedback from estrogen) and reduced estrogen. FSH rises most markedly.
5) Rinne's tuning fork test - 25-year-old male in which air conduction is better than bone conduction in right ear, but bone conduction is better than air conduction in left ear. Patient is suffering from:
  • A. Left ear conductive deafness ✓ (Correct Answer)
  • B. Right ear conductive deafness
  • C. Left ear sensorineural deafness
  • D. Right ear sensorineural deafness
Explanation: Rinne negative (BC > AC) in left ear indicates LEFT ear conductive deafness.
6) A 20-year-old female diagnosed with Turner syndrome. Number of Barr bodies in above female is:
  • A. Zero ✓ (Correct Answer)
  • B. One
  • C. Two
  • D. Three
Explanation: Turner syndrome is 45, XO. Barr bodies = number of X chromosomes - 1 = 1 - 1 = 0.
7) A 25-year-old male comes to OPD with complaints of loss of pain and temperature sensation with preservation of touch, vibration, and position. Identify the condition:
  • A. Syringomyelia ✓ (Correct Answer)
  • B. Tabes dorsalis
  • C. Multiple sclerosis
  • D. Wilson's illness
Explanation: Dissociated sensory loss (pain/temperature lost, touch preserved) is classic for syringomyelia (central cord lesion affecting spinothalamic tracts while dorsal columns are spared).
8) A 25-year-old male comes with complaints of fatigue with excessive salt craving and diplopia. Identify the condition:
  • A. Myasthenia gravis ✓ (Correct Answer)
  • B. Lambert-Eaton syndrome
  • C. Muscular dystrophy
  • D. Malignant syndrome
Explanation: Fatigue, diplopia (ocular muscle weakness), and excessive fatigue on exertion is classic for Myasthenia gravis.
9) A 60-year-old male develops non-fluent speech after stroke. He understands language but cannot speak fluently. The lesion is most likely located in:
  • A. Broca's area ✓ (Correct Answer)
  • B. Wernicke's area
  • C. Angular gyrus
  • D. Cerebellum
Explanation: Broca's area (inferior frontal gyrus) - damage causes expressive/non-fluent aphasia. Patient understands but cannot produce fluent speech.
10) A 40-year-old male comes to emergency with complaints of keeping in air, frequent falls, difficulty maintaining posture while walking. On examination, nystagmus is seen. Which part of cerebellum is most likely affected?
  • A. Flocculonodular lobe ✓ (Correct Answer)
  • B. Spinocerebellum
  • C. Neocerebellum
  • D. Vermis
Explanation: The flocculonodular lobe (archicerebellum/vestibulocerebellum) controls balance and eye movements. Damage causes truncal ataxia, nystagmus, and equilibrium disturbance.
11) In pituitary adenoma, bitemporal hemianopia is seen. This is due to lesion at:
  • A. Optic nerve
  • B. Optic chiasma ✓ (Correct Answer)
  • C. Optic tract
  • D. Optic radiation
Explanation: The optic chiasma is directly above the pituitary fossa. A growing pituitary adenoma compresses the crossing nasal fibers at the chiasma, causing bitemporal hemianopia.
12) A 35-year-old female brought by husband because of loud snoring, complaints of morning headache and excessive daytime sleepiness. Classify the condition:
  • A. Obstructive sleep apnea ✓ (Correct Answer)
  • B. Narcolepsy
  • C. Somnambulism
  • D. Bruxism
Explanation: Loud snoring + morning headache (CO₂ retention) + excessive daytime sleepiness is the classic triad of Obstructive Sleep Apnea (OSA).
13) EEG is recorded in person while doing solving mathematical problem. Which type of EEG wave is recorded?
  • A. Alpha
  • B. Beta ✓ (Correct Answer)
  • C. Theta
  • D. Delta
Explanation: Beta waves (13-30 Hz) are associated with active, busy, or anxious thinking and active concentration - such as solving mathematical problems.
14) In left dorsal column pathway lesion, which sensation is lost from left side below the lesion?
  • A. Pain ✓ (marked)
  • B. Temperature
  • C. Crude touch
  • D. Vibration ✓ (Correct Answer)
Explanation: The dorsal columns carry fine touch, proprioception, vibration, and two-point discrimination (ipsilaterally). So a left dorsal column lesion = loss of vibration and proprioception on the LEFT side below the lesion.
15) Aldosterone cramps is due to:
  • A. Atrial natriuretic factor (marked)
  • B. Nitric oxide
  • C. Endothelin
  • D. Angiotensin II
Correct Answer: Aldosterone acts on the kidneys to retain sodium and excrete potassium. Hypokalemia from excess aldosterone causes muscle cramps. The question likely refers to Angiotensin II stimulating aldosterone, but aldosterone cramps are due to hypokalemia.
Note: The image was partially blurry and photographed at an angle, so some answer options may have minor transcription inaccuracies. If you need clarification on any specific question or want detailed explanations for any topic, feel free to ask!
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