1. Who invented Transformer ?

Answer:

Ottó Bláthy

2. Who invented Submarine ?

Answer:

John Philip Holland

3. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

4. Who invented Helicopter ?

Answer:

Igor Sikorsky

5. Who invented Computer ?

Answer:

Charles Babbage

6. Who invented paper ?

Answer:

Cai Lun

7. Who invented Vitamin K ?

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