Question

when was the national science day is celebrated & why it is celebrated

Answer 1

I hope my answer helps you

Answer 2

28 February

National Science Day is celebrated in India on 28 February each year to mark the discovery of the Raman effect by Indian physicist Sir C V Raman on 28 February 1928. For his discovery, Sir C.V. Raman was awarded the Nobel Prize in Physics in 1930.