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General Knowledge on Inventions

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)
31. An Electrical “Telegraph” was developed by Whom?
32. Which was invented “RUBBER(TYRE)”?
33. In which year was the ball bearing patented?
34. With which vehicle was invented about 3000 BCE?
35. Who of these inventors registered nearly 1,100 patents?
36. Who famous inventor worked at a patent office?
37. Which invented google ?
38. Which invented Computer ?
39. Which invented Microphone ?
40. Which invented Automatic rifle ?

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