Q. Polystyrene often used as a consumable pattern material has a relative density of (Solved)
1. 20 to 25 kg/m3
3. 2240 to 2500 kg/m3
4. 120 to 125 kg/m3
5. 1120 to 1125 kg/m3
- a. 20 to 25 kg/m3
1. 20 to 25 kg/m3
3. 2240 to 2500 kg/m3
4. 120 to 125 kg/m3
5. 1120 to 1125 kg/m3