Q. Prior to Census 2011, in which among the following census highest Sex Ratio was recorded in India?
Answer: Census 1961
Notes: The highest sex ratio in India was recorded in the Census of 1941, with 972 females for every 1,000 males. This was before important demographic changes due to factors like World War II, partition, and subsequent socio-economic developments. The sex ratio declined in later censuses, notably to 946 in 1961 and further to 933 in 1971.