1. Diesel Engine   Rudolf Diesel   Michael Faraday   Sir Alexander Graham Bell   Charles Goodyear   Hint Half-n-half Clue   2. Movie Projector   John Logie Baird   Thomas Alva Edison   Benjamin Franklin   Samuel Morse   Half-n-half Clue   3. Aeroplane   Sir Alexander Graham Bell   Alfred B. Nobel   Orville and Wilbur Wright   John Logie Baird   Half-n-half Clue   4. Bifocal Lens   James Watt   Orville and Wilbur Wright   Benjamin Franklin   Fahrenheit   Half-n-half Clue   5. Microphone   Benjamin Franklin   Charles Macintosh   Thomas Alva Edison   Sir Alexander Graham Bell   Half-n-half Clue   6. Vulcanised Rubber   Michael Faraday   John Boyd Dunlop   Charles Goodyear   Alfred B. Nobel   Half-n-half Clue   7. Steam Engine (condenser)   Benjamin Franklin   Thomas Alva Edison   James Watt   King C. Gillette   Half-n-half Clue