Bengaluru, Jan 22 (IANS) A leading international rating agency has certified Bengaluru as the most liveable location in India, followed by Mumbai and Chennai. Though Bengaluru is ranked 171 in the global liveability index, the tech hub has scored favourably over metros and other cities across the country in terms of overall quality of living, while New Delhi has been rated as the least liveable, with worst air quality. "In India, Bangalore (Bengaluru), which is ranked 171 globally, scores most favourably followed by Mumbai and Chennai both ranked 182. New Delhi, ranked 204, is the least liveable, with worst score for air quality like Beijing is in the world," ECA International said in a statement Thursday from London. As the leading provider of knowledge, information and technology for the management and assignment of employees the world over, ECA rated Singapore as the most liveable location in Asia and globally, followed by Sydney and Adelaide in Australia. "Good ai...