Which of Anita Desai's novels was adapted into a feature film and what award was given to the film?

Anita Desai's 1984 novel "In Custody" was adapted into the 1993 Merchant Ivory feature film "In Custody" ("Muhafiz"), directed by Ismail Merchant, which was honoured at the National Film Awards presented by the President of India. None of the other three novels by Anita Desai was adapted into a film winning the listed awards.