National Science Day is observed in India on 28 February to mark
- A.The founding of CSIR
- B.The discovery of the Raman effect
- C.The first Indian satellite launch
- D.The Pokhran nuclear tests
Show answer
Correct answer: B. The discovery of the Raman effect
Explanation
The correct answer is B, the discovery of the Raman effect. C. V. Raman announced his discovery of the scattering effect now named after him on 28 February 1928, and since 1987 India has observed that date as National Science Day, with a theme, lectures and science fairs in schools and laboratories. Option A is wrong because the Council of Scientific and Industrial Research was founded in 1942 and its founding day is not this date. Option C is wrong because India's first satellite, Aryabhata, was launched in 1975 and the day is not marked as a national observance. Option D is wrong because the nuclear tests conducted at Pokhran in 1998 are marked on 11 May as National Technology Day, a date often exchanged with this one in examination papers.