1. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

2. Who invented paper ?

Answer:

Cai Lun

3. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

4. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

5. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

6. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.