Which one of the following pairs is not correctly matched?

Correct option is A

The correct answer is (a)
Explanation:
· Incorrect Match: The pair (a) 2001 — 2011 — 19.05 is not correctly matched.
· Actual Data: According to the Census of India 2011, the decadal growth rate of the population for the period 2001-2011 was 17.64% (often rounded to 17.7%).
· The figure 19.05 provided in the option is incorrect for the national average.
Additional Information (Other Options):
· Option (b) 1991 - 2001: The growth rate was 21.54%, which is correctly matched.
· Option (c) 1981 - 1991: The growth rate was 23.87%, which is correctly matched.
· Option (d) 1971 - 1981: The growth rate was 24.66%, which is correctly matched.
Information Booster:
· Sharpest Decline: The decade 2001-2011 witnessed the sharpest decline in the decadal growth rate since independence, dropping from 21.54% to 17.64%.
· Year of Great Divide: The only decade in India's history where the population actually decreased (negative growth rate of -0.31%) was 1911-1921, largely due to the influenza epidemic and famine. This year (1921) is often called the "Year of the Great Divide."