गयासुद्दीन का मकबरा कहाँ स्थित है ? - Where is Ghiyasuddin's tomb located? - Gayasuddin Ka Makbara Kahan Sthit Hai ? Delhi Gk in hindi, General Studies Allahabad question answers in hindi pdf Delhi questions in hindi, Know About Agra Delhi Gk online test Delhi Gk notes in hindi quiz book Mathura