Which of the following is NOT true of polymethyl methacrylate ? – McqOptions

MCQOPTIONS

1.	Which of the following is NOT true of polymethyl methacrylate ?
A.	Knoop hardness number 18 to 20
B.	Tensile strength of 60 MPa
C.	Density of 1.13 g/cm3
D.	Modulus of elasticity of 3.4 GPa
Answer» E.

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