4. Where did John Scott Haldane graduate in medicine?
a) St. Mary’s Hospital Medical School
b) Westminster Medical School
c) Royal Postgraduate Medical School
d) Edinburgh University Medical School
5. Which magazine did John Scott Haldane found?
a) The Journal of Hygiene
b) The Lancet
c) American Medical News
d) Mining Journal
6. What did John Scott Haldane introduce in coal mines to detect gas?
a) Frogs
b) Electronic gas detectors
c) Canaries
d) Litmus paper
