11. Who invented the gas burner?
(a) Judson
(b) Haisn
(c) Buensen
(d) Holt
12. What is invented by Babbage?
(a) Teletype
(b) Zipper
(c) Calculating machine
(d) Tire
13. Name the inventor of Kodak camera?
(a) Darwin
(b) Fulton
(c) Eastman
(d) Barnard
14. Whose invention is Polaroid camera?
(a) Wilson
(b) Land
(c) Fisher
(d) Newton
15. Who invented the audio cassettes?
(a) Phillips
(b) Sharp Company
(c) Hitachi
(d) National Company
16. Whitney’s invention is:
(a) Pendulum
(b) Photoelectric cell
(c) Cotton gin
(d) Phonograph
17. Which is of the following invention of Lane?
(a) Pistol
(b) Safety-pin
(c) Harvester thresher
(d) None of these
18. Mention the inventor of engine (high speed).
(a) Geo Brayton
(b) Daimler
(c) Both of them
(d) None of them
19. Who invented the furnace for steel?
(a) Siemens
(b) Harrison
(c) Hertz
(d) None of them
20. Whose invention is Fiberglass?
(a) Owens
(b) Coming
(c) Both of them
(d) None of them