1. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

2. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

3. Who invented Submarine ?

Answer:

John Philip Holland

4. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

5. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

6. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

7. Who invented Proton ?

Answer:

Ernest Rutherford