This set of Polymer Engineering Assessment Questions and Answers focuses on “Equilibrium in Chain Polymerization”. 1. Which of the following is not dependent on result of equilibrium condition of polymerization reaction? a) degree of polymerization b) chain length distribution c) limiting monomer conversion d) none of the mentioned 2. How the increase in temperature to … Read more
This set of Polymer Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Inhibition and Retardation”. 1. The substance that reduces the rate and degree of polymerization, without halting the propagation process, is called a___________ a) retarder b) inhibitor c) modifier d) regulator 2. Which of the following has the highest practical utility as an … Read more
This set of Polymer Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Chain Transfer”. 1. What does the effect of chain transfer on Rp depend on? a) re-initiation rate constant, ki’ b) monomer concentration c) ki’/kp d) none of the mentioned 2. How is the value of average degree of polymerization defined, considering the … Read more
This set of Polymer Engineering Problems focuses on “Chain Length and Degree of Polymerization”. 1. What does the ratio Rp/Ri represent in polymerization? a) chain length b) monomer concentration c) initiator concentration d) none of the mentioned 2. The kinetic chain length represents the average number of monomer molecules in a polymer molecule. State true … Read more
This set of Polymer Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Photo Initiaton of Polymerization”. 1. What is the mechanism of uncatalyzed photo-initiation of polymerization, when light of specific wavelength falls on monomer? a) monomer directly decomposes to give radicals b) monomer generates excites species by absorbing light quanta and then decompose into … Read more
This set of Polymer Engineering online quiz focuses on “Thermal Initiation in Absence of an Initiator and Gel Effect”. 1. What is the characteristic feature of the gel effect in radical polymerization? a) increase in kinetic rate b) increase in molecular weight of product polymer c) formation of highly viscous mass d) all of the … Read more
This set of Polymer Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Initiation and Initiator Systems”. 1. Which of the following is a mode for radicals to move out of the cage in decomposition mechanism of initiator? a) net diffusion of radicals produced b) release of a small molecule, formed by decomposition of radicals, … Read more
This set of Polymer Engineering Multiple Choice Questions & Answers focuses on “Kinetics of Chain Polymerization Initiated by a Free Radical Initiator “. 1. How many initiator fragments are present in the dead polymer formed by combination mode of chain termination? a) 2 b) 1 c) 3 d) 0 2. What is the initiator efficiency … Read more
This set of Polymer Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Comparison b/w Addition and Condensation Polymerization”. 1. Which of the following reaction is not accompanied by elimination of a byproduct molecule? a) addition polymerization b) condensation polymerization c) both of the mentioned d) none of the mentioned 2. The chain growth process … Read more
This set of Polymer Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Radical Chain Polymerization”. 1. Which of the following can activate chain initiation? a) heat b) light or radiation c) catalysts d) all of the mentioned 2. Which of the following monomers cannot undergo chain growth polymerization? a) CH2═ CH2 b) CH2═CHCN c) … Read more
