The 75-year-old actress died this morning at her Andheri residence here.
"It is shocking as she did not have any history of illness," a relative of hers told PTI on condition of anonymity.
Born to Marathi film actor-director Vinayak Damodar Karnataki, Nanda began her silver screen career early as a child artist with 'Jaggu' in the 50s.
Her popularity as a child actress made her transition to major roles easier, and she literally grew up on film sets.
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With the success of 'Toofan Aur Diya', Nanda did not look back and went on to establish herself in the Hindi film industry with hits like 'Jab Jab Phool Khile', 'Gumnaam', 'Teen Deviyan', 'The Train', 'Mandir', 'Angarey', 'Ram Laxman', 'Bandi', 'Ittefaq', 'Hum Dono', 'Prayashchit', 'Ahista Ahista', 'Prem Rog' and 'Mazdoor' among several others.
She excelled most often as a supporting star but also found great acceptance and popularity as a lead heroine in later years.
Their pairing in 'Jab Jab Phool Khile' was a huge success and inspired 'Raja Hindustani'. It was for the first time that the actress played a westernised role.
Nanda was nominated for Filmfare Award five times for her performance in Bhabhi (1957), Aanchal (1960), Ittefaq (1969), Ahista Ahista (1981) and Prem Rog (1982).
She won Filmfare Best Supporting Actress Award for 'Aanchal'.
She made a brief return to acting in 1982 as a character actress where she played the onscreen mothe of Padmini Kolhapure in 'Ahista Ahista', 'Mazdoor' and 'Prem Rog'.
After that she retired from acting.
Nanda's last rites will be performed at 4 pm at the Oshiwari crematorium.