What is the purpose of the oxygen-nitrous oxide proportioning (hypoxic guard) system?

To stop delivery of a gas mixture with too little oxygen

To raise the oxygen flow when the pipeline fails

To measure the oxygen in exhaled gas

To shut off the volatile agent if oxygen fails

Free DHA Anesthesia Technologist mock test

12 original exam-style questions from our Anesthesia Technologist bank, timed at the exam’s own pace, scored against the 60% DHA pass mark. They span 6 of the 8 blueprint domains, so you will see exactly where you are weakest - free, no sign-up.

Free diagnosticNo sign-up · no email · results instantly

Sit 12 original exam-style questions at real exam pace

These are 12 original questions taken from our Anesthesia Technologist bank, spread across 6 of the 8 domains of the published blueprint. You get 72 seconds per question, which is exactly the pace of the real ANA5702 exam (14 minutes for 12). At the end you will see which domains you are weakest in, and the full worked reasoning for every question.

12: questions
14:24: time limit
60%: DHA pass mark

A short diagnostic cannot predict whether you will pass - only the real exam does that. It will show you, honestly, where you currently stand.

What the real Anesthesia Technologist licensing exam looks like

Candidates for a Anesthesia Technologist licence in the UAE sit a computer-based multiple-choice examination - DHA exam code ANA5702, delivered through Prometric for DHA, MOHAP and SHA, and through Pearson VUE for DOH Abu Dhabi. The DHA pass mark is 60% (DHA CBT Guideline, Sep 2026); other authorities set their own, so confirm yours before booking. The result is reported to you as pass or fail only - your score is never released.

Pass marks at a glance: DHA exam codes and pass marks for all written exams in one sourced table.

The paper is built to a published blueprint, which is why a domain-by-domain diagnostic is more useful than a raw percentage. Your questions above were drawn from across Airway management equipment and assistance, Anaesthetic pharmacology for technologists, Emergencies and crisis support, Patient monitoring and 2 more - the same areas the real paper weights.

Before you can book the exam at all you need Dataflow primary source verification of your degree, licence and experience, which typically runs several weeks. Candidates routinely underestimate this and end up sitting the exam sooner after study than they planned. Check where you stand with our free eligibility checker or confirm whether your title even requires an exam using the Prometric exam checker.

You get three attempts in total across all UAE authorities - not three each - under the Unified Professional Qualification Requirements. At roughly AED 880 per attempt, plus the licensing delay each failure adds to your visa and start date, the cost of going in underprepared is not really the exam fee.

What is on the Anesthesia Technologist exam: the full blueprint

The published blueprint splits into 8 domains and 47 testable sub-topics. The diagnostic above samples across them, which is why its breakdown maps onto the structure the real paper is built from.

Anaesthesia machine, breathing systems and gas supply~18%7 topics
Airway management equipment and assistance~16%6 topics
Patient monitoring~14%6 topics
Anaesthetic pharmacology for technologists~10%5 topics
Infection control, cleaning and sterilisation~12%6 topics
Emergencies and crisis support~12%6 topics
Vascular access, regional anaesthesia and transfusion~8%5 topics
Patient safety, equipment safety and professional practice~10%6 topics

Questions: 150 multiple-choice (DHA ANA5702)
Duration: 3 hours, including registration
DHA pass mark: 60% - reported as pass or fail only

Figures for the DHA exam, from the DHA CBT Guideline, Sep 2026. DOH, MOHAP, SCFHS, QCHP, NHRA and OMSB set their own length, timing and pass mark. See the DHA exam guide and pass marks for every DHA exam.

A worked Anesthesia Technologist exam question

Every question in the diagnostic and in the paid bank is written to this standard: a clinical stem, four plausible options and the reasoning for the answer, with its source.

Airway management equipment and assistance

What tracheal tube internal diameter is commonly chosen for oral intubation of an average adult woman?

A5.0 mm
B9.5 mm
C4.0 mm
D7.0 mmCorrect

Why: A 7.0 to 7.5 mm internal diameter tube suits most adult women and 8.0 to 8.5 mm most adult men. Tubes of 4 to 5 mm are paediatric sizes.

Source: Miller's Anesthesia, 9th ed.

Anesthesia Technologist sample questions with answers

4 more original exam-style Anesthesia Technologist questions, worked in full. They are not real or recalled exam questions, and none of them is in the diagnostic above, so sit that first if you have not.

Question 1 · Airway management equipment and assistance
What cuff pressure range is generally recommended for a tracheal tube?
1. A5 to 10 cmH2O
2. B40 to 50 cmH2O
3. C60 to 80 cmH2O
4. D20 to 30 cmH2O
Show answer and explanation
Correct answer: D. 20 to 30 cmH2O
A cuff pressure of 20 to 30 cmH2O seals the airway while limiting mucosal ischaemia. Higher pressures reduce tracheal mucosal blood flow, and lower pressures allow aspiration.
Reference: Miller's Anesthesia, 9th ed.
Question 2 · Anaesthesia machine, breathing systems and gas supply
A full size E oxygen cylinder holds about 680 litres at 137 bar. The gauge now reads 69 bar. About how long will it last at 5 L/min?
1. AAbout 68 minutes
2. BAbout 136 minutes
3. CAbout 34 minutes
4. DAbout 14 minutes
Show answer and explanation
Correct answer: A. About 68 minutes
For a compressed gas, contents are proportional to pressure: 69/137 x 680 is about 340 L, and 340 / 5 is about 68 minutes. Using the full cylinder volume gives 136 minutes, a common error.
Reference: Ward's Anaesthetic Equipment, 6th ed.
Question 3 · Anaesthetic pharmacology for technologists
Under the international standard for user-applied syringe labels in anaesthesia, which colour identifies neuromuscular blocking drugs?
1. ARoyal blue
2. BLemon yellow
3. CLight violet
4. DFluorescent red
Show answer and explanation
Correct answer: D. Fluorescent red
ISO 26825 uses fluorescent red for neuromuscular blockers, blue for opioids, yellow for induction agents and violet for vasopressors. Consistent colour coding reduces drug errors.
Reference: ISO 26825 Anaesthetic and Respiratory Equipment: User-Applied Labels for Syringes
Question 4 · Anaesthesia machine, breathing systems and gas supply
What is the purpose of the oxygen-nitrous oxide proportioning (hypoxic guard) system?
1. ATo raise the oxygen flow when the pipeline fails
2. BTo stop delivery of a gas mixture with too little oxygen
3. CTo measure the oxygen in exhaled gas
4. DTo shut off the volatile agent if oxygen fails
Show answer and explanation
Correct answer: B. To stop delivery of a gas mixture with too little oxygen
The proportioning system links the oxygen and nitrous oxide flowmeters so the delivered mixture cannot fall below about 25% oxygen. It does not protect against a wrong gas in the oxygen pipeline, so an oxygen analyser is still essential.
Reference: Ward's Anaesthetic Equipment, 6th ed.

Last reviewed September 2026. About these questions: every item is original, written to the published blueprint, with a rationale and a reference, and no recalled or leaked exam content is used. How we write our questions.

How to use this diagnostic properly

1Sit it cold, once. Do not look anything up. A diagnostic you help yourself through tells you nothing. The number you get is only useful if it is honest.
2Read every rationale - especially the ones you got right. Getting a question right by elimination is not the same as knowing it. The worked reasoning is free above, whether or not you buy anything.
3Work weakest domain first. The breakdown orders your domains worst-first for exactly this reason. Studying what you are already good at feels productive and moves nothing.
4Re-sit under full exam conditions later. The real paper is far longer than this and stamina matters. Full-length timed papers are what the paid bank is for.

Frequently asked questions

Is this Anesthesia Technologist mock exam really free?

Yes. All 12 questions, your score, the domain breakdown and the full worked answers are free, with no sign-up and no email required. The paid bank is a separate, much larger set of 450 questions.

Are these real Anesthesia Technologist exam questions?

No. They are original questions written to the official Anesthesia Technologist blueprint and drawn from our full bank - not leaked or recalled items, which would breach exam security and are frequently out of date. They follow the exam's format and domain weighting.

What is the pass mark for the Anesthesia Technologist exam?

60% for the DHA Anesthesia Technologist exam (ANA5702), as published in the DHA CBT Guideline, Sep 2026. Other authorities set their own pass marks, so confirm yours before booking. DHA reports only pass or fail - your actual score is never released to you, which is why a diagnostic like this is useful for seeing where you stand.

Does passing this mock mean I will pass the real exam?

No, and we will not claim otherwise. 12 questions cannot predict a full-length paper. What it does reliably show is which blueprint domains you are currently weakest in.

How many attempts do I get at the real exam?

Three in total across all UAE authorities under the Unified Professional Qualification Requirements - not three per authority. Each attempt costs roughly AED 880.

What topics does the Anesthesia Technologist exam cover?

The published blueprint splits into 8 domains covering 47 testable sub-topics: Anaesthesia machine, breathing systems and gas supply, Airway management equipment and assistance, Patient monitoring, Anaesthetic pharmacology for technologists, Infection control, cleaning and sterilisation, Emergencies and crisis support, Vascular access, regional anaesthesia and transfusion, Patient safety, equipment safety and professional practice. The full weighting table is on this page.

How long is the Anesthesia Technologist exam and how many questions?

The DHA Anesthesia Technologist exam (ANA5702) is 150 multiple-choice questions in 3 hours, including registration and the introduction, as published in the DHA CBT Guideline, Sep 2026. Other authorities set their own length and timing, so confirm theirs in the current candidate bulletin.

Do I need to create an account to take this mock exam?

No. There is no sign-up, no email capture and no payment. The questions, your score, the domain breakdown and the full worked answers are all free, and nothing is held back behind a form.