Bombay Mail, a 1935 Hindi-language Indian film, featured what supporting actress, who is best known for her songs, "Sun Bairi Baalam Sach Bol Re" in "Bawre Nain" (1950), "Ghabrekar Ke Jo Hum Sir Ko Takraayan" in "Mahal" (1949) and "Najariya Ki Maari" in "Pakeezah" (1972)?
Bombay Mail (1935 film):  The cast includes leading lady Panna, supporting actress Rajukumari, both of whom had starred in the brothers' previous film, "Sacred Scandal" (1934), alongside senior character actor Jayant, Umakant, Esmail, Rajababu and S. Nazir. Rajkumari Dubey: Rajkumari Dubey (1924–2000), better known by her first name, Rajkumari, was an Indian playback singer who worked in Hindi cinema of 1930s and 1940s. Rajkumari Dubey:  Best known for her songs, "Sun Bairi Baalam Sach Bol Re" in "Bawre Nain" (1950), "Ghabrekar Ke Jo Hum Sir Ko Takraayan" in "Mahal" (1949) and "Najariya Ki Maari" in "Pakeezah" (1972).
i don't know