The Anaesthesia Machine and Workstation
- Previous year questions on The Anaesthesia Machine and Workstation for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Anaesthesia section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 36 live questions in The Anaesthesia Machine and Workstation.
- 2 of 36 questions carry a verified exam year: 2018, 2019.
- Anaesthesia is worth about 6 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 19 Aug 2026.
Q1.To prevent combustion during anesthesia what combination is used?
- AO2 25% & N2O 75%
- BO2 50% & N2O 50%
- CO2 25% & He 75%✓ Correct answer
- DO2 75% & N2O 25%
Q2.Critical temperature for liquid nitrogen is ?
- A36.5degC
- B-20degC
- C-147degC✓ Correct answer
- D-242degC
Q3.Colour of nitrous oxide cylinder is?
- ABlue✓ Correct answer
- BBlue body with white shoulder
- CWhite
- DBlack
Q4.A sevoflurane vaporizer can accurately deliver the dose of an anesthetic agent. It resembles it in which of the following properties?
- AMolecular weight
- BOil gas partition coefficient
- CBlood gas partition coefficient
- DVapor pressure✓ Correct answer
Q5.Pin index system for oxygen
- A1,5
- B2,5✓ Correct answer
- C4,5
- D3,5
Q6.Gas cylinder with single pin index -
- AOxygen
- BAir
- CNitrogen
- DEntonox✓ Correct answer
Q7.Pin code index of N2O is-
- A1,6
- B2,5
- C2,6
- D3,5✓ Correct answer
Q8.What is the pressure at which oxygen is stored ?
- A75 psi
- B1600 psi
- C760 psi
- D2200 psi✓ Correct answer
Q9.Minimal mandatory Percentage of oxygen used in general anaesthesia is
- A33%
- B30%✓ Correct answer
- C21%
- D66%
Q10.True about anaesthesia machine – a) Cylinder is a part of high pressure systemb) O2 flush delivers < 35 litc) O2 flush delivers > 35 litd) Pipeline is a part of low pressure system
- Aa
- Bbc
- Cad
- Dac✓ Correct answer
Answer key
Q1: C. O2 25% & He 75%; Q2: C. -147degC; Q3: A. Blue; Q4: D. Vapor pressure; Q5: B. 2,5; Q6: D. Entonox; Q7: D. 3,5; Q8: D. 2200 psi; Q9: B. 30%; Q10: D. ac.
Other topics in Anaesthesia
- History and Ethics of Anaesthesia
- Preoperative Assessment of the Patient
- Intraoperative CNS and CVS Monitoring
- Respiratory Monitoring During Anaesthesia
- Devices for Airway Management
- Intubation
- Anaesthetic Breathing Circuits
- Basic and Paediatric Life Support (BLS and PALS)
- ACLS
- Ventilators and O2 Delivery Devices
- Depolarising Neuromuscular Blockers
- Non-Depolarising Neuromuscular Blockers
- Inhaled Anaesthetics: Basic Properties, N2O and Halothane
- Inhaled Anaesthetics: Fluorinated and Inert Agents with Therapeutic Gases
- Intravenous Anaesthesia: Barbiturates, Benzodiazepines and Propofol
- Intravenous Anaesthesia: Etomidate, Ketamine and Day-care Surgery
- Local Anaesthetics: Pharmacology and Properties
- Local Anaesthetics: Individual Agents
- Regional Anaesthesia: Methods and Approaches
- Regional Anaesthesia: Risks and Contraindications
- Peripheral Nerve Blockade
- Anaesthetic Implications of Coexisting Disease
- Anaesthesia in Paediatrics and Obstetrics
- Pain Management: Postoperative, Chronic and Cancer Pain
- Perioperative Anaesthetic Complications