Which of the following polymer is not a copolymer? (5 points) a) Polyethylene terephthalate (PET) b) Polylactic acid (PLA) c) Polycarbonate (PC) d) Polybutylene terephthalate (PBT) which of the following polymer is categorized as polyolefin? (5 points) a) Polyethylene (PE) b) Polyethylene terephthalate (PET) c) Polycarbonate (PC) d) Polyamide (PA) Which of the following monomers can be used for condensation polymerization? (5 points) a) CH3 (CH2)4 COOH and NH2(CH2)6 CH3 b) CH3 (CH2)4 COOH and NH2(CH2)6 CH2 NH2 c) HOOC CH2 (CH2)4 COOH and NH2(CH2)6 CH3 d) HOOC CH2 (CH2)4 COOH and NH2(CH2)6 CH2 NH2 There are two molecular mass for describing the weight mass of polymers including and ( .). Which one is higher? (5points)