1) Which is the most famous invention of Thomas Alva Edison?
a) Projector
b) Radio
c) Telephone
d) Electric bulb
2) How many inventions were patented by Thomas Alva Edison?
a) 500
b) 997
c) 1093
d) 1100
3) Which of the following quotations is attributed to Thomas Alva Edison?
a) We have nothing to fear but fear.
b) I promise you blood, sweat, toil and tears.
c) We make our destiny by our actions.
d) Genius is one per cent inspiration and 99 per cent perspiration.