Which one of the following is the correct statement on the basis of Census-2001?
- ABihar has the highest percentage of the Scheduled Caste of its population
- BThe decadal growth of population of India (1991-2001) has been below 20%
- CMizoram is the Indian State with the least population
- DPondicherry has the highest sex ration among the Union TerritoriesCorrect
Explanation
Option D is correct because, according to the 2001 Census, Pondicherry now known as Puducherry recorded a sex ratio of 1001 females per 1000 males, which was the highest among all Union Territories in India.
Regarding the other options: A is incorrect because Punjab, not Bihar, had the highest percentage of Scheduled Caste population. B is incorrect because the decadal growth rate of India from 1991 to 2001 was 21.54 percent, which is above 20 percent. C is incorrect because Sikkim was the state with the least population, not Mizoram.

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