1. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

2. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

3. Who invented DNA Structure ?

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

4. Who invented Bakelite ?

Answer: Leo H. Baekeland of Belgium in 1907.

5. Who invented colour television ?

Answer:

Peter Carl Goldmark

6. Who invented X-ray ?

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

7. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903