- Sex ratio, defined as the number of females per thousand males is an important social indicator to measure the extent of prevailing equality between males and females in a society at a given point of time. - The sex ratio in the country has always remained unfavourable to females. - It was 972 at the beginning of the 20th century and thereafter showed continuous decline until 1941. - The sex...

- One of the important indices of population concentration is the density of population. - It is defined as the number of persons per sq.km. - The population density of India in 2011 was 382 per sq km-decadal growth 17.54%. - The density of population increased in all States and Union Territories between 1991 and 2011. - Among major states, Bihar is the most thickly populated state with (a pop...

- The populatio, of India as onn March 1st, 2011 stood at 1,210.7 million (623.2 million males and 587.5 million females). - India accounts for a meagre 2.4% of the world surface area of 135.79 million sq.km. - Yet, it supports and sustains a whopping per cent of the world population. - The population of India, which at the turn of the twentieth century was around 238.4 million, increases to re...

- Census 2011 was the 15th Census of India since 1872. It was held in two phases: 1. House listing and Housing Census (April to Sept. 2010) and 2. Population Enumeration (9th to 28th February 2011 with Revisional round during 1st to 5th March, 2011). Reference Date was 0.00 hour of 1st March 2011. In snow bound areas, the Population Enumeration was conducted from 11th 30th September 2010. The Fi...

- The national calendar based on the Saka Era, with Chaitra as its first month and a normal year of 365 days was adopted from 22nd March, 1957 along with the Gregorian calendar for : (i) Gazette of India, (ii) news broadcast by All India Radio, (iii) calendars issued by the Government of India and (iv) Government communications addressed to the public. - Dates of the national calendar have a perm...