Explanation : The Census of India groups all towns and urban agglomerations into the following six classes according to population size
• Class I : population of 100,000 and above
• Class II : population of 50,000 to 99,999
• Class III : population of 20,000 to 49,999
• Class IV : population of 10,000 to 19,999
• Class V : population of 5,000 to 9,999
• Class VI : population less than 5,000
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