Q. Electron microscope was invented by

  • (A) Robert Koch
  • (B) C.P. Swanson
  • (C) Knoll & Ruska
  • (D) Leeuwenhock
✅ Correct Answer: (C) Knoll & Ruska

Published by Ram Sharma ⭐ 193.88K Points at 06-May-2022 10:04 pm in General Awareness

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