23-year-old Chopra registered a throw of 86.65m and topped Group A in his first ever Olympics.
On the other hand, Shivpal Singh failed to secure a place for men's javelin throw finals. His three attempts in Group B of men's javelin qualification read: 76.40, 74,80, 74.81.
Meanwhile, Boxer Lovlina Borgohain, who is already assured of a medal, will take on reigning world champion Busenaz Sürmeneli in semis (69kg) today for a place in the final.
Moreover, Indian women's hockey team will take on Argentina in the all-important semi-final today.