<prompt> Unit of radiation absorption is:RadRemGrayCurie  <response>: Ans. c Gray. Ref. Park PSM, 17th ed. 363, 522RADIATION UNITS QuantityOld unitNew SI unit1ActivityCurieBecquerel2ExposureRoentgenCoulombkg3Absorbed doseRadGray4Dose equivalentRemSievert5Effective dosemSv Radiation units1 Becquerel Bq - Unit of activity 1 Bq 1 disintegrationsecond2 Curie Ci - Was unit of activity formerly 1 Bq 27 picocuries3 Roentgen - Unit of exposure 1 mrad 0.001 radNew SI Units1 Coulombkg - Replaced Roentgen2 Gray - Replaced Rad 1 rad 0.01 Gy3 Sievert - Replaced Rem 1 Sv 100 rems 