1. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

2. Who invented google ?

Answer:

Larry Page

3. Who invented Vitamin D ?

Answer:

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

4. Who invented Transformer ?

Answer:

Ottó Bláthy

5. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

6. Who invented Neutron bomb ?

Answer:

Samuel T. Cohen

7. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.