Kumari took gold in the clean-and-jerk and silver in the snatch to win with a combined total of 205kg.
Team-mate Prasmita Mangaraj claimed silver in the clean-and-jerk and bronze in the snatch to win overall silver with 195kg.
The overall bronze went to Canada's Pascale Dorcelus while England's Annette Campbell just missed out on the medals, finishing fourth in all three categories.