Kerala PSC Previous Years Question Paper & Answer
Page:4
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'LECTURER IN POLYMER TECHNOLOGY' And exam conducted in the year 2015. And Question paper code was '031/2015/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
Question29:-Polydispersity index is said to be 1 when
A:-Mw = Mn
B:-Mw > Mz
C:-Mz > Mz+1
D:-None of these
Correct Answer:- Option-A
Question30:-In emulsion polymerization technique, the polymerization takes place in
A:-Water phase
B:-Monomer phase
C:-Water/Monomer interphase
D:-Micelle
Correct Answer:-Question Cancelled
Question31:-Thermoplastic polyurethane is a
A:-Thermoplastic
B:-Elastomer
C:-Thermoplastic elastomer
D:-Thermoset
Correct Answer:- Option-C
Question32:-For EPDM the unsaturation is in the
A:-Main chain
B:-Branches
C:-Pendent groups
D:-Alll of these
Correct Answer:- Option-C
Question33:-The monomers of buty! rubber are
A:-Butadiene and isoprene
B:-Butadiene and 1-butene
C:-Isoprene and 1-butene
D:-None of these
Correct Answer:- Option-D
Question34:-The property that is lowered by increasing CN content of NBR is
A:-Oil resistance
B:-Low temperature flexibility
C:-High temperature resistance
D:-None of these
Correct Answer:- Option-B
Question35:-The EPM is not cured by
A:-Sulphur
B:-Peroxide
C:-Radiation
D:-Oxime
Correct Answer:- Option-A
Question36:-Fluorocarbons are known for
A:-High temperature resistance
B:-Ozone resistance
C:-Oil resistance
D:-Alll of these
Correct Answer:- Option-D
Question37:-Nylon 66 melts at (deg C)
A:-219
Correct Answer:- Option-C
Question38:-In unsaturated polyester the monomer that is commonly used to give crosslinking sites is
A:-Fumaric acid
B:-Terephthalic acid
C:-Itaconic acid
D:-Maleic anhydride