1. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

2. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

3. Who invented Nylon ?

Answer:

Wallace Carothers

4. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

5. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747

6. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

7. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644