When National Science Day is celebrated?

A. 25 February

B. 26 February

C. 27 February

D. 28 February

Explanation:

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.  On this day, Physicist CV Raman announced the discovery of the ‘Raman Effect’ for which he was awarded the Nobel Prize in 1930. The day is aimed at spreading the message of the importance of science and its application in human life.