The Bengali scientist famous for inventing (discovering) Mercurous Nitrite is Prafulla Chandra Ray.
Based on common academic sources and the context of your query, the correct option is likely Prafulla Chandra Ray (often listed as P.C. Ray).
Why it is Correct
- Discovery: In 1895–1896, while working as an assistant professor at Presidency College in Calcutta, Prafulla Chandra Ray discovered mercurous nitrite (\(Hg_2(NO_2)_2\)).
- Global Recognition: Before his discovery, the chemical community believed that mercurous nitrite was an unstable compound; Ray's successful isolation and stabilization of it earned him worldwide fame and the title "Master of Nitrites".
- Scientific Legacy