1. Calcium   Sir Humphry Davy   Hans Christian   Charles Darwin   Gregor Mendel   Hint Half-n-half Clue   2. Aluminium   Sir J. J. Thompson   Michael Faraday   Sir Humphry Davy   Hans Christian   Half-n-half Clue   3. Modern Theory of Atomic Structure   Enrico Fermi   Alexander Fleming   Neels H. D. Bohr   Michael Faraday   Half-n-half Clue   4. Neptunium   Euclid   Sir Humphry Davy   Enrico Fermi   Hans Christian   Half-n-half Clue   5. Theory of Relativity   Wilhelm K. Roentgen   Albert Einstein   Henry Cavendish   Hans Christian   Half-n-half Clue   6. Principles of Geometry   Ronald Ross   Christian Barnard   Euclid   Sigmund Freud   Half-n-half Clue   7. Penicillin   Gregor Mendel   Alexander Fleming   Enrico Fermi   Sir Humphry Davy   Half-n-half Clue