1. Who discovered natural radioactivity?
A. Hentry Bequeral
2. Hydrogen was discovered by?
A. Cavendish
3. Who discovered Argon?
A. Ramsay
4. Name the scientist who proposed pH value?
A. Sorenson
5. Who discovered the Law of Gravitation?
A. Sir Isaac Newton
6. Who discovered penicillin?
A. Alexander Fleming
7. Who invented elevator?
A. EG Otis
8. Who invented Radar ?
A. Robert Watson Watt
9. Who discovered Florescence?
A. Sir George Stokes
10. Who was the inventor of stainless steel?
A. Brearley
11. Who invented television?
A. John baird
12. Who invented the stethoscope and when?
A. In 1816, the French physician Rene Theoplhie Laennec (1781-1826) introduced a perforated wooden cylinder which concentrated the sounds of air flowing in and out of the lungs, and described the sound which it revealed. The modern form of stethoscope, with flexible tubes connecting the earpieces to a circular piece placed against the chest, was developed later in the nineteenth century.
13. How did arithmetical numbers come into existence? Where was ‘zero’ invented?
A. The arithmetical numbers, which are universal today, were first invented system in India. This is known as Hindu numeral system. It simplified calculations by marking the values of a number depend on its position as well as the number itself. In the number 444, the single figure 4 represents 400, 40 and 4, and the whole number is the sum of these values. In contrast, the Romans used symbols whose values were the same irrespective of their positions.
Hindu numeral system included a zero. So, zero was first invented in India. Zero revolutionised arithmetical calculations and the numeral system. It was adopted by the Arabs and then reached Europe as early as in 10th century.
Hindu numeral system included a zero. So, zero was first invented in India. Zero revolutionised arithmetical calculations and the numeral system. It was adopted by the Arabs and then reached Europe as early as in 10th century.
14. Who invented insulin?
A. Insulin is a very useful drug for diabetes and was discovered by the Canadian physician and Nobel price winner , Dr.Federik Grant Banting in 1921.
15. Magnifying glass was invented by
A. Roger Bacon
16. Polio vaccine was invented by
A. Jonas Edward Salk
17. Who discovered the Blood groups
A. Karl Landsteiner
18. Television was invented by
A. John L. Baird
19. Wireless Telegraph was invented by
A. Marconi
20. Incandescent lamp was invented by
A. Edison
21. X-Ray was discovered by
A. Wilhelm Roentgen
22. Chloroform was invented by
A. J.Y. Simpson
23. Who invented the practical Locomotive
A. Richard Trevithick
24. Who invented Microprocessor
A. Ted Hoff
25. Who invented dynamite?
A. Alfred Nobel
26. What creature's fossilized leg bone did John Horner discover red blood cells in, in 1993?
A. A tyrannosaurus rex's.
27. What suntan lotion was developed by Dr. Ben Green in 1944 to protect pilots who bailed out over the Pacific?
A. Coppertone.
28. What was Friedrich Serturner the first to extract from opium and use as a pain reliever?
A. Morphine.
29. What computer company was named after a founder's memories of spending a summer in an Oregon orchard?
A. Apple.
30. What weapon did German gunsmith August Kotter unload on the world in 1520?
A. The rifle.
31. What type of machine did 19-year-old French genius Blaise Pascal invent to help his dad do taxes in 1642?
A. An adding machine.
32. What Benjamin Holt invention was good news to farmers in 1900?
A. The tractor.
33. What landmark invention did Ts'ai Lun invent from bark and hemp in the second century?
A. Paper.
34. What did "Art Fry invent after scraps of paper to mark tunes in his hymnal kept falling out?
A. Post-it Notes.
35. What did Leonardo invent to check humidity while he worked on the Last Supper fresco?
A. The hygrometer.
36. What country was the first to register a patent on polyester?
A. Briton.
37. What "foot doctor" held over 300 patents?
A. Dr. Scholl.
38. What 1947 invention by Bell Telephone Laboratories spawned pocket-sized radios?
A. The transistor.
39. What disease prompted polio vaccine inventor Dr. Jonas Salk to come out of retirement in 1987?
A. AIDS.
40. What was the occupation of cotton candy machine inventor William James Morrison?
A. Dentist.
41. What Italian astronomer invented the thermometer in 1592?
A. Galileo.
42. What did George Nisser invent after observing high wire performers bouncing on safety nets?
A. The trampoline.
43. What century saw the invention of the shoelace?
A. The eighteenth.
44. What name did George Eastman invent in 1888 because it was easy to memorize, pronounce, and spell?
A. Kodak.
45. What innovative inventor's Dymaaxion car could carry eleven passengers, exceed 120 mph and get 30 miles per gallon in 1934?
A. Buckminster Fuller's.
46. What type of structure did R. Buckminster Fuller patent in 1954?
A. The geodesic dome.
47. What century saw Alexander Cummings issued the first patent for a flush toilet?
A. The eighteenth.
48. What portable device did James Spengler invent in 1907, using a soap box, pillow case, a fan and tape?
A. The vacuum cleaner.
49. What landmark invention eased farming chores for Sumerians in 3500 B.C.?
A. The plow.
50. What food product did Hyppolyte Merge-mouries invent in 1868 by treating oils with hydrogen?
A. Margarine.
51. What British second lieutenant got the idea to fill a canister shell with musket balls and a charge of gunpowder?
A. Sir Henry Shrapnel.
52. Who averaged one patent for every three weeks of his life?
A. Thomas Edison.
53. What kitchen invention took the top prize at the 1893 Chicago World's Fair?
A. The dishwasher.
54. What company gave the world the first electric toothbrush?
A. Interplak.
55. What Edwin Budding invention began changing the face of English landscapes in the 1820s?
A. The lawn mower.
56. What invention for keeping cold air out of buildings in winter was patented by Theophilus Van Kannel in 1888?
A. The revolving door.
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