Engineering Sciences
GATE XE exam:gate PYQs
Build your understanding with focused practice from past exam papers.
Questions 1361–1370 of 1772. Imported answers require independent review unless marked reviewed.
Question 5
Open questionXE-FMCQ1 markNeeds review
Hypalon is the trade name for
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Open questionXE-FMCQ1 markNeeds review
The copolymer(s) among high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) is/are
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The polymer which lacks the ability to exhibit tacticity among the following is
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Open questionXE-FMCQ1 markNeeds review
The correct order of glass transition temperature (T_g) for the polymers listed below is (PC = polycarbonate; PET = poly(ethylene terephthalate); PE = polyethylene; PP = polypropylene)
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Polystyrene coffee cup can be most economically manufactured by
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Open questionXE-FMCQ2 marksNeeds review
Match the following rubber additives to their function:
Additive
P. Tetramethyl thiuram disulfide
Q. Xylyl mercaptan
R. Sulfur
S. Microcrystalline wax
Function
Peptizer
Antizonant
Accelerator
Cross-linking agent
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Open questionXE-FMCQ2 marksNeeds review
Match the following polymers with their characteristic infrared (IR) stretching frequency:
Polymer
P. Polystyrene
Q. Polyacrylonitrile
R. Poly(ethylene terephthalate)
S. Poly(vinyl alcohol)
IR stretching frequency (cm⁻¹)
~2242
~1733
~3392
~3100
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Open questionXE-FMCQ2 marksNeeds review
Match the following products to the most suitable polymer for their manufacture:
Product
P. Electrical cables
Q. Electrical switches
R. Optical lenses
S. Shoe soles
Polymer
Polyurethane
Poly(methyl methacrylate)
Cross-linked polyethylene
Phenol formaldehyde resin
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Open questionXE-FMCQ2 marksNeeds review
The order of limiting oxygen index for the following polymers is (polypropylene=PP; PTFE=polytetrafluoroethylene; PVC=poly(vinyl chloride))
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Open questionXE-FMCQ2 marksNeeds review
Match the following plastic additives to their function:
Additive
P. Molybdenum disulfide
Q. Glycerol monostearate
R. Tribasic lead sulphate
S. 2-Hydroxybenzophenone
Function
Heat stabilizer
UV-absorber
Antistatic agent
Solid layer lubricant
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