1. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

2. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

3. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

4. Who invented Transformer ?

Answer:

Ottó Bláthy

5. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

6. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

7. Who invented Printing Press ?

Answer:

Johannes Gutenberg