1. Electron   Sigmund Freud   Sir Humphry Davy   Sir J. J. Thompson   Ronald Ross   Hint Half-n-half Clue   2. Aluminium   Karl Wilheim Scheele   Hans Christian   Sigmund Freud   Michael Faraday   Half-n-half Clue   3. Theory of Evolution   Sir Humphry Davy   Charles Darwin   Enrico Fermi   Alexander Fleming   Half-n-half Clue   4. Hydrogen   Louis Pasteur   Henry Cavendish   Albert Einstein   Wilhelm K. Roentgen   Half-n-half Clue   5. Modern Theory of Atomic Structure   Christian Barnard   Alexander Fleming   Neels H. D. Bohr   Sir Humphry Davy   Half-n-half Clue   6. Laws of Gravitation   Sir Isaac Newton   Gregor Mendel   William Harvey   Ronald Ross   Half-n-half Clue   7. Psychoanalysis   Wilhelm K. Roentgen   Alexander Fleming   Ronald Ross   Sigmund Freud   Half-n-half Clue