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WBCS Preliminary Examination 2017 — General Studies · Question 105 of 200

Q105
General SciencePhysics
The material used for safety from nuclear radiation is
  1. a.copper
  2. b.platinum
  3. c.iron
  4. d.lead

Answer: (D) lead

Lead's high density and atomic number make it highly effective at absorbing and shielding against nuclear/gamma radiation.

Q104 Whole paperQ106