<prompt> As per census 2001, most populous state during 19912001 was: March 2005TripuraRajasthanUttar pradeshOrissa  <response>: Ans. C: Uttar pradesh During 1991-2001, the lowest growth rate was recorded in Kerala 9.42 percent followed by Tamil Nadu 11.19 and Andhra Pradesh 13.86. Andhra Pradesh has shown the sharpest decline among all the major states 10.34 percent. Uttar Pradesh continues to be the most populous state in the country with 16.17 percent of Indias population followed by Maharashtra 9.42 percent and Bihar 8.07 percent. In fact the population of Uttar Pradesh 166 million is more than the estimated population of Pakistan. 