In Feb 2016, which city topped the 'Swachh Survekshan - 2016' rankings of 73 cities in India with minimum open defecation and extensive adoption of solid waste management practices?
Mathura Refinery, the ............ refinery of Indian Oil was commissioned in 1982 with a capacity of 6.0 MMTPA to meet the demand of petroleum products in north western region of India.