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Which one of the following possess dual recording system of vital events ?

  • A.Census
  • B.National Family Health Survey
  • C.Sample Registration System
  • D.National Sample Survey

Answer: C

The dual recording system belongs to the Sample Registration System.

Run by the Registrar General of India since the late 1960s, the SRS records births and deaths in sample units in two independent ways: continuous enumeration by a local part-time enumerator, and a half-yearly retrospective survey by a full-time supervisor. The two records are matched and unmatched events are verified, which gives reliable fertility and mortality estimates.

The Census counts the population once in ten years, and the NFHS and the National Sample Survey are periodic sample surveys, not dual records of vital events.

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