cExams.net
Now you Know
Enhance your General Knowledge.

12990. Invention
Invention : american sign language
Year : 1817
Inventor : thomas h. gallaudet
Country : us.

12991. Invention
Invention : animation, motion-picture
Year : 1906
Inventor : j. stuart blackton
Country : us.

12992. Invention
Invention : answering machine, telephone
Year : 1898
Inventor : valdemar poulsen
Country : denmark.

12993. Invention
Invention : aspartame
Year : 1965
Inventor : james schlatter
Country : us.

12994. Invention
Invention : aspirin
Year : 1897
Inventor : felix hoffmann (bayer)
Country : germany.

12995. Invention
Invention : assembly line
Year : 1913
Inventor : henry ford
Country : us.

12996. Invention
Invention : astrolabe
Year : c. 2nd century
Inventor : -
Country : -.

12997. Invention
Invention : astroturf
Year : 1965
Inventor : james m. faria, robert t. wright
Country : us.

12998. Invention
Invention : audiotape
Year : 1928
Inventor : fritz pfleumer
Country : germany.

12999. Invention
Invention : automated teller machine (atm)
Year : 1968
Inventor : don wetzel
Country : us.

13000. Invention
Invention : automobile
Year : 1889
Inventor : gottlieb daimler
Country : germany.

13001. Invention
Invention : baby food, prepared
Year : 1927
Inventor : dorothy gerber
Country : us.

13002. Invention
Invention : bag, flat-bottomed paper
Year : 1870
Inventor : margaret knight
Country : us.

13003. Invention
Invention : bakelite
Year : 1907
Inventor : leo hendrik baekeland
Country : us.

13004. Invention
Invention : ball bearing
Year : 1794
Inventor : philip vaughan
Country : england.

13005. Invention
Invention : balloon, hot-air
Year : 1783
Inventor : joseph & etienne montgolfier
Country : france.

13006. Invention
Invention : bandage, adhesive
Year : 1921
Inventor : earle dickson
Country : us.

13007. Invention
Invention : bar code
Year : 1952
Inventor : joseph woodland
Country : us.

13008. Invention
Invention : barbed wire
Year : 1874
Inventor : joseph glidden
Country : us.

13009. Invention
Invention : barometer
Year : 1643
Inventor : evangelista torricelli
Country : italy.

13010. Invention
Invention : battery, electric storage
Year : 1800
Inventor : alessandro volta
Country : italy.

13011. Invention
Invention : beer
Year : before 6000 bc
Inventor : sumerians, babylonians
Country : mesopotamia.

13012. Invention
Invention : bicycle
Year : 1818
Inventor : baron karl de drais de sauerbrun
Country : germany.

13013. Invention
Invention : bifocal lens
Year : 1784
Inventor : benjamin franklin
Country : us.

13014. Invention
Invention : bikini
Year : 1946
Inventor : louis reard
Country : france.

13015. Invention
Invention : blood bank
Year : late 1930s
Inventor : charles richard drew
Country : us.

13016. Invention
Invention : blow-dryer
Year : 1920
Inventor : racine universal motor co., hamilton beach manufacturing co.
Country : us.

13017. Invention
Invention : bomb, atomic
Year : 1945
Inventor : j. robert oppenheimer, et al.
Country : us.

13018. Invention
Invention : bomb, thermonuclear (hydrogen)
Year : 1952
Inventor : edward teller, et al.
Country : us.

13019. Invention
Invention : boomerang
Year : c. 15,000 years ago
Inventor : aboriginal peoples
Country : australia.

13020. Invention
Invention : braille system
Year : 1824
Inventor : louis braille
Country : france.

13021. Invention
Invention : brassiere (bra)
Year : 1913
Inventor : mary phelps jacob
Country : us.

13022. Invention
Invention : bread, sliced (bread-slicing machine)
Year : 1928
Inventor : otto frederick rohwedder
Country : us.

13023. Invention
Invention : button
Year : c. 700 bc
Inventor : greeks, etruscans
Country : greece, italy.

13024. Invention
Invention : buttonhole
Year : 13th century
Inventor : -
Country : europe.

13025. Invention
Invention : calculator, electronic hand-held
Year : 1967
Inventor : jack s. kilby
Country : us.

13026. Invention
Invention : calculus
Year : 1680s
Inventor : sir isaac newton and gottfried wilhelm leibniz (invented separately)
Country : england and germany (respectively).

13027. Invention
Invention : calendar, modern (gregorian)
Year : 1582
Inventor : pope gregory xiii
Country : italy.

13028. Invention
Invention : camcorder
Year : 1982
Inventor : sony corp.
Country : japan.

13029. Invention
Invention : camera, motion picture
Year : 1891
Inventor : thomas alva edison, william k.l. dickson
Country : us.

13030. Invention
Invention : camera, portable photographic
Year : 1888
Inventor : george eastman
Country : us.

13031. Invention
Invention : can, metal beverage
Year : 1933
Inventor : american can co.
Country : us.

13032. Invention
Invention : can opener
Year : 1858
Inventor : ezra j. warner
Country : us.

13033. Invention
Invention : candle
Year : c. 3000 bc
Inventor : -
Country : egypt, crete.

13034. Invention
Invention : canning, food
Year : 1809
Inventor : nicolas appert
Country : france.

13035. Invention
Invention : carbon-14 dating
Year : 1946
Inventor : willard f. libby
Country : us.

13036. Invention
Invention : cardboard, corrugated
Year : 1871
Inventor : albert jones
Country : us.

13037. Invention
Invention : cards, playing
Year : c. 10th century
Inventor : -
Country : china.

13038. Invention
Invention : cash register
Year : 1879
Inventor : james ritty
Country : us.

13039. Invention
Invention : cat litter
Year : 1947
Inventor : edward lowe
Country : us.



  • Ujjain - The City of Temples
  • Early Inventions
  • Honeymoon Places
  • 101 Ideas to Feel Happy
  • GK Questions Answers
  • Top 20 Bollywood Hits

  • Chourishi Systems