1. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

2. Who invented Nylon ?

Answer:

Wallace Carothers

3. Who invented Super Computer ?

Answer:

Seymour Cray

4. Who invented Vitamin K ?

Answer: Doisy Dam of U.S.A. in 1938.

5. Who invented Submarine ?

Answer:

John Philip Holland

6. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

7. Who invented Vitamin D ?

Answer:

Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922