USNCO Practice

Practice for all stages of the US National Chemistry Olympiad.

USNCO Local Exam

60 multiple-choice questions

110 minutes (approx. 6600s)

Held at your school / regional site

Covers general to advanced college chemistry

Sample: 5 questions available

Scoring

+1 per correct answer

No penalty for wrong answers

Top ~1500 students nationally advance

Typically >70% correct to advance

Sample questions only — full question banks coming soon