1. Movie Projector   Thomas Alva Edison   Elisha G. Otis   Benjamin Franklin   John Boyd Dunlop   Hint Half-n-half Clue   2. Lightning Conductor   Michael Faraday   Rudolf Diesel   Benjamin Franklin   Sir Alexander Graham Bell   Half-n-half Clue   3. Microphone   Thomas Alva Edison   Michael Faraday   Sir Alexander Graham Bell   Alfred B. Nobel   Half-n-half Clue   4. Aeroplane   Orville and Wilbur Wright   Thomas Alva Edison   Charles Macintosh   Alfred B. Nobel   Half-n-half Clue   5. Mercury Thermometer   Charles Macintosh   Thomas Alva Edison   Fahrenheit   Rudolf Diesel   Half-n-half Clue   6. Electric Generator   Benjamin Franklin   King C. Gillette   Michael Faraday   John Logie Baird   Half-n-half Clue   7. Pneumatic Tyres   Alfred B. Nobel   Charles Goodyear   John Boyd Dunlop   King C. Gillette   Half-n-half Clue