Among the following, which one has the minimum population on the basis of data of Census of India, 2001?

1. The question asks which entity had the minimum population based on the Census of India, 2001. 2. Population figures from the 2001 Census were approximately: - Chandigarh (UT): ~900,000 - Mizoram (State): ~888,000 - Puducherry (UT): ~974,000 - Sikkim (State): ~540,000 3. Therefore, Sikkim had the minimum population among the options.