The population of Tamil nadu has ___over a period of 60 years from 1951 to 2011.
a) Double
b) Tripled
c) Tumbled
d) None of these

Hint: Tamil Nadu is one of India's 28 states. Chennai is its capital and largest city. In the southernmost portion of the Indian subcontinent, Tamil Nadu lies bordered by the union territory of Puducherry and the states of Kerala, Karnataka and Andhra Pradesh in South India. It is bordered to the north by the Eastern Ghats, to the west by the Nilgiri Mountains, the Meghamalai Hills, and Kerala, to the east by the Bay of Bengal, to the east by the Gulf of Mannar, and to the southeast by the Palk Strait.

Complete Answer:
- In 1873, the first population census in India was carried out. Since then, the government has administered a decennial census in 1881, 1891, 1901, 1911, 1921, 1931, and 1941. After the independence of India in 1947, the Indian Government has conducted a census every 10 years, starting from 1951.
- The census in India is carried out under the Ministry of Home Affairs by the Office of the Registrar General and Census Commissioner and is one of the largest administrative tasks undertaken by the Ministry of Home Affairs.
- The total population of the state of Tamil Nadu was 72,147,039, with 36,137,975 males, 36,009,055 females, a sex ratio of 996 females per 1,000 males, a literacy rate of 80.09 percent, 10.51 percent of the population under seven years, and a population density of 555, according to the 2011 Census of India. From 1951 to 2011, Tamil Nadu's population doubled over a period of 60 years.

Hence, the correct answer is option a).

Note: A systematic and modern population census was conducted non-synchronously between 1865 and 1872 in various parts of the world in its present form. This effort, which ended in 1872, was commonly referred to as India's first population census, but the first synchronous census was conducted in India in 1881.