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CSS Solved Papers
Physics Chemistry

Engineering :: Foundry Technology

  Polystyrene often used as a consumable pattern material has a relative density of
[A]. 20 to 25 kg/m3[B]. 120 to 125 kg/m3
[C]. 1120 to 1125 kg/m3[D]. 2240 to 2500 kg/m3

Answer: Option A
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