1. Who invented Transistor ?

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

2. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

3. Who invented Piano ?

Answer:

Bartolomeo Cristofori

4. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

5. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

6. Who invented HIV ?

Answer:

7. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland