1. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

2. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

3. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

4. Who invented Helicopter ?

Answer:

Igor Sikorsky

5. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

6. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

7. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland