Tag: individual and society

Sex ratio is the number of females present per 1000 males in an area. Child sex ratio is the number of girl children for 1000 boys under age of 0-6 years. According to 2011 census, child sex ratio is recorded highest in Mizoram which is 971 per 1000 boys.

Graphical representation of total population of a country, male and female population ratio and old and young people ratio is classified as population pyramid. There are different types of it which include:

• Stationary pyramid: in such countries, people of all the ages are present more or less equally.
  
• The expansive pyramid is wide at younger ages and narrows at older ages.
  
• The constrictive pyramid is narrow at the bottom, which means younger people are less in number.
  

Serchhip is the most literate districts in India. It is one of the districts of Mizoram. It has a literacy rate of 97.91%.

As per the census of India, an urban town is defined as a place which has a population density of 400 persons per sq km, more than 50% of the population should be engaged in agriculture and size of the population should be more than 5000. The mere presence of municipality does not make it a town according to the census of India.

Tool used to measure distribution of population is called population density. Population density is defined as the number of people present per square kilometre. Population density of India according to 2011 census is 382 persons per square kilometres.

The population density of India has gone up to 382 persons per square kilometre in 2011 from 325 persons per square kilometre in 2001. The rate of increase in density of India has exhibited a sharp decline during 2001ó2011 (17.5 per cent) as compared to 1991ó2001 (21.7 per cent).