Multiple choice

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Population density means

  1. No. of persons living per sq. km.

  2. No. of persons living per kilometre

  3. Ratio of population living below poverty line to total population

  4. No. of persons in a village

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Explanation

Population density is defined as the number of persons living per square kilometer. It's a key demographic indicator that helps understand population distribution and pressure on resources. India's population density is approximately 382 persons per sq. km. (as of 2001 census), varying significantly across states.