Q. Who developed the polio vaccine?

  • (A) Edward Jenner
  • (B) Jonas Salk
  • (C) Alexander Fleming
  • (D) Robert Koch
✅ Correct Answer: (B) Jonas Salk
Explanation: Jonas Salk developed the first successful polio vaccine.

Published by Mr. Dubey ⭐ 109.86K Points at 18-Jul-2026 04:41 pm in General Awareness

Explanation by: Mr. Dubey
Jonas Salk developed the first successful polio vaccine.

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