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The water occurring in a rock formation entrapped during the deposition of the rock is called :

  • A.Meteoric water
  • B.Juvenile water
  • C.Connate water
  • D.Pellicular water

Answer: C

It is connate water.

Connate water (from Latin for 'born together') is water trapped in the pores of a sediment when it was deposited and sealed in as the rock formed. It is usually old and saline, and occurs, for example, alongside oil and gas in reservoir rocks.

Meteoric water comes from rain and snow and enters rocks from the surface. Juvenile water is new water released from magma, reaching the surface for the first time. Pellicular water is the thin film held on grains by molecular attraction in the unsaturated zone.

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