Explore topic-wise MCQs in Polymer Engineering.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Polymer Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

With the introduction of solvents in modifying the initiator species and affecting the degradative chain transfer, the value of parameter kp2/kt , changes with the solvent concentration. State true or false.

A. True
B. Falses
Answer» C.
Discussion
2.

Viscosity of the polymerization medium has a great influence on the termination process. State true or false.

A. True
B. Falses
Answer» B. Falses
Discussion
3.

What is the value of intercept of the line plotted between the terms (2kt/kp2)(Rp2/[I][M]2) and Rp/[M], when there is simultaneous occurrence of bimolecular termination and termination by degradative process?

A. 2fkd
B. fkd
C. kt’/kp
D. [I] s
Answer» B. fkd
Discussion
4.

What is the order of dependence of monomer concentration on Rp, in the exclusive case of degradative initiator transfer process?

A. 1
B. 0
C. 2
D. 0.5s
Answer» B. 0
Discussion
5.

Consider initiator-monomer complexation in polymerization reaction, and a straight line is plotted between [M]3/Rp2 and [M]. What is the value of quotient of slope and the intercept?

A. equilibrium rate constant of monomer complexation reaction, K
B. termination rate constant, kt
C. propagation rate constant, kp
D. initiator concentrations
Answer» B. termination rate constant, kt
Discussion
6.

VISCOSITY_OF_THE_POLYMERIZATION_MEDIUM_HAS_A_GREAT_INFLUENCE_ON_THE_TERMINATION_PROCESS._STATE_TRUE_OR_FALSE.?$

A. True
B. False
Answer» B. False
Discussion
7.

With_the_introduction_of_solvents_in_modifying_the_initiator_species_and_affecting_the_degradative_chain_transfer,_the_value_of_parameter_kp2/kt_,_changes_with_the_solvent_concentration._State_true_or_false.$

A. True
B. False
Answer» C.
Discussion
8.

What is the value of intercept of the line plotted between the terms (2kt/kp2)(Rp2/[I][M]2) and Rp/[M], when there is simultaneous occurrence of bimolecular termination and termination by degradative process?

A. 2fk<sub>d</sub>
B. fk<sub>d</sub>
C. k<sub>t</sub><sup>’</sup>/k<sub>p</sub>
D. [I] 
Answer» B. fk<sub>d</sub>
Discussion
9.

How does the addition of solvents and additives, due to their abnormal effects, can affect the process of polymerization?

A. increase initiator efficiency
B. increase radical generation
C. enhance chain initiation rate
D. all of the mentioned
Answer» E.
Discussion
10.

What is the order of dependence of monomer concentration on Rp, in the exclusive case of degradative initiator transfer process?

A. 1
B. 0
C. 2
D. 0.5
Answer» B. 0
Discussion
11.

What are the initiator and monomer orders, in limiting case of exclusive primary radical termination?

A. 0, 2
B. 1, 2
C. 1, 1
D. 2, 0
Answer» B. 1, 2
Discussion
12.

Which of the following can restrict the bimolecular termination?

A. high monomer concentration
B. insolubility of polymer formed in monomer
C. presence of solvents, additives
D. none of the mentioned
Answer» C. presence of solvents, additives
Discussion
13.

What is the order of reaction with respect to initiator, considering exclusive case of unimolecular termination?

A. 1
B. 0
C. 2
D. 0.5
Answer» B. 0
Discussion
14.

Consider initiator-monomer complexation in polymerization reaction, and a straight line is plotted between [M]3/Rp2 and [M]. What is the value of quotient of slope and the intercept?

A. equilibrium rate constant of monomer complexation reaction, K
B. termination rate constant, k<sub>t</sub>
C. propagation rate constant, k<sub>p</sub>
D. initiator concentration
Answer» B. termination rate constant, k<sub>t</sub>
Discussion
15.

Which of the following is not a reason for non-ideal kinetics of radical polymerization?

A. initiator-monomer complexation
B. unimolecular termination
C. degradative initiator transfer
D. none of the mentioned
Answer» E.
Discussion