1. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

2. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

3. Who invented Piano ?

Answer:

Bartolomeo Cristofori

4. Who invented Vitamin D ?

Answer:

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

5. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

6. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

7. Who invented Radar ?

Answer:

Sir Robert Watson-Watt