Question

what r the criterion to b a metropolitan city??

Answer 1

they are the capital of states
in that cities place are very clean and neat

Answer 2

the Constitution (seventy-fourth Amendment) Act, 1992 defines a metropolitan area in India as, an area having a population of ten lakhs or more, comprised in one or more districts and consisting of two or more Municipalities or Panchayats or other contiguous areas, specified by the Governor by public notification to be a Metropolitan area