Free NBCE Part I Practice Tests (2026)
Start with the free diagnostic to see where you stand, then practice in tutor or timed mode. Full-length simulations match the real NBCE Part I.
Diagnostics
NBCE Part I Practice Test 1
10 questions · 10 min10 free NBCE Part I practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testPractice tests
NBCE Part I Practice Test 2
10 questions · 10 min10 free NBCE Part I practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testNBCE Part I Practice Test 3
5 questions · 10 min5 free NBCE Part I practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testHow these NBCE Part I practice tests match the real exam
The real NBCE Part I — Basic Sciences has 255 questions and a 206-minute time limit. Question types: Multiple choice, grouped by domain, forward-only navigation. Each practice test here uses the same question formats, so you get used to how NBCE Part I questions are asked before test day.
The tests draw on every NBCE Part I content area, weighted like the official outline:
- General Anatomy (about 20% of the exam)
- Spinal Anatomy (about 22% of the exam)
- Physiology (about 18% of the exam)
- Chemistry (about 13% of the exam)
- Pathology (about 16% of the exam)
- Microbiology (about 11% of the exam)
Use tutor mode to see the explanation after each answer, or timed mode to practise at real exam pace. Every answer comes with an explanation of why it is right and why the other options are wrong.