Birbal Sahni (Geologist)
Birbal Sahni was an Indian paleobotanist. he studied the fossils of the Indian subcontinent and also a geologist who took an interest in archaeology.
Prafulla Chandra Ray (Chemist)
Acharya Sir Prafulla Chandra Ray was a well-known Indian scientist and first “modern” Indian chemical researchers and teacher. He was known as "Father of Indian Chemistry".
Raja Ramanna (Physicist)
Raja Ramanna was an Indian physicist, Father of India’s nuclear program. He was truely a multi-faceted personality.
Har Gobind Khorana
He got the Nobel Prize in Physiology or Medicine, for his research that showed the order of nucleotides in nucleic acids, which carries genetic code of the cell and control the cell's synthesis of proteins.