state gov Odisha Police Junior Clerk Mock Test 2024 General Knowledge Science Technology and Inventions
Find out which of the following statements of Invention/Discovery, Scientist & Year is incorrect?
| SI.No. | Invention/Discovery | Scientist | Year |
| 1. | Helicopter | Briquette Brothers | 1909 |
| 2. | Incandescent Bulb | Marry Curie, USA | 1879 |
| 3. | Improved Power Elevator (lift) | Otis and Watson | 1852 |
| 4. | Laser | Gordon Gouid, USA | 1957 |
| 5. | Motor Cycle | G. Dainibar, Germany | 1885 |
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