1.

Which of the following patterns has high compressive strength?(a) Plastic pattern(b) Wax pattern(c) Polystyrene pattern(d) Plaster pattern

Answer» The correct choice is (d) Plaster pattern

Explanation: Among plastic patterns, wax patterns and polystyrene pattern, it is plaster pattern which has the highest compressive strength. The calculated compressive strength is as high as up to 285kg/cm^2.


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