The correct answer is: Income.
The Census of India is a decennial census of India, conducted by the Office of the Registrar General and Census Commissioner, India. The first census was conducted in 1872, and the most recent census was conducted in 2011. The census collects data on a variety of topics, including population, age, sex, religion, caste, education, language, and occupation.
Income is not usually collected as part of the Census of India. This is because income is a sensitive topic, and people may be reluctant to share their income information with the government. Additionally, collecting income data is expensive and time-consuming.
The other options, religion, caste, and educational qualifications, are all collected as part of the Census of India. Religion is collected because it is an important factor in understanding the social and cultural diversity of India. Caste is collected because it is a social hierarchy that has a significant impact on the lives of many Indians. Educational qualifications are collected because they are an important indicator of human capital and development.
In conclusion, the correct answer to the question “Which of these is NOT usually collected as part of the Census in India?” is: Income.