GATE Questions of Polymer Science and Engineering 2014
Gate Questions for Polymer Science and Engineering likely to be asked for Gate 2014 is given here. Sample Questions given here will be helpful for all writing XE paper in Gate 2014. Model Question Papers with Answers for Polymer Science and Engineering have been prepared affter evaluating previous years questions in Gate.
POLYMER SCIENCE & ENGINEERING (XE) - GATE 2014 - SAMPLE QUESTIONS
In free radical polymerization, one of the following techniques permits simultaneous increase in
rate of polymerization and polymer molecular weight.
(A) Solution polymerization. (B) Suspension polymerization.
(C) Bulk polymerization. (D) Emulsion polymerization
High molecular weight polymers could be obtained even at low monomer conversion in case of
(A) Step growth polymerization (B) Living polymerization
(C) Chain growth polymerization (D) Solid state polymerization
A reinforced polymer composite is made by the incorporation of
(A) elastomers into the polymer. (B) fibers into the polymer.
(C) plasticizers into the polymer. (D) gaseous additives into the polymer
For a given free-radical polymerization, the only mode of termination is the bimolecular termination and there is no chain transfer. The final polymer produced was analyzed to contain an average of 1.60 initiator fragments per polymer chain.
Q. Percentage of final polymer chains containing one initiator fragment per chain is
(A) 40 % (B) 50 % (C) 60 % (D) 70 %
Q. Percentage of polymer radicals terminated by coupling is
(A) 65 % (B) 75 % (C) 85 % (D) 95 %
How many stereo isomers are possible in total on polymerization of butadiene?
(A) 2 (B) 3 (C) 4 (D) 5
The unit of intrinsic viscosity is
(A) dl/g (B) g/dl (C) poise (D) g/mol
Match the following compounding ingredients in plastic technology with their respective
Compounding ingredients Functions
P. Tricresyl phosphate 1. Filler
Q. Calcium carbonate 2. UV stabilizer
R. Azodicarbonamide 3. Plasticizer
S. o-Hydroxybenzophenone 4. Blowing agent
(A) P-3, Q-1, R-4, S-2 (B) P-1, Q-4, R-3, S-2
(C) P-4, Q-1, R-2, S-3 (D) P-3, Q-4, R-1, S-2
The diamine used for the synthesis of nylon 6,4 is
(A) tetramethylene diamine (B) hexamethylene diamine
(C) phenylene diamine (D) cyclohexane-1,4-diamine
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