1. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

2. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

3. Who invented Calculus ?

Answer: Newton of Britain in 1670.

4. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

5. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

6. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

7. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644