Start learning →

The brain can be badly damaged if it gets no oxygen for about how long?

A5 hours
B5 minutes
C5 days
D5 seconds
Answer & Solution
Correct answer: B. 5 minutes
Permanent brain damage begins after about five minutes without oxygen, so quick help is needed.
Practise this question with Quill — Olympiad (Class 4) →

Keep practising Life skills

Browse all Life skills questions for Olympiad (Class 4), or explore more General Knowledge topics.

Start a Life skills lesson →
Related questions