Which of the following statements is true about veteran nuclear scientist Rajagopala Chidambaram, who recently passed away?
1
He played a pivotal role in India’s nuclear tests in 1975 and 1998.
2
He served as the Director-General of ISRO.
3
He passed away at AIIMS Hospital in New Delhi.
4
He was associated with the development of India's first geo-stationary satellite.