polyolefins
polyamide
polyacrylate
polyurathane
✅ The correct answer is option B.
Chemical Engineering MCQs
Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties.
thermoplastic
thermosetting
elastometric
brittleness
✅ The correct answer is option C.
Thermal pyrolysis of ethylene dichloride produces
trichlorethylene
vinyl chloride
ethanol amine
ethylene oxide
✅ The correct answer is option B.
Catalyst used in the production of high density polythene by low pressure Ziegler process is
aluminium triethyl activated with TiCl4
platinum
molybdenum
Nickel
✅ The correct answer is option A.
Vulcanisation of raw rubber makes it
soft
less elastic
plastic
tacky
✅ The correct answer is option B.
90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C.
-5
Oct-30
250-280
500-600
✅ The correct answer is option C.
Collapsible tubes for tooth paste are produced by __________ extrusion.
direct
indirect
impact
none of these
✅ The correct answer is option C.
Which of the following polymers shows the highest anti-tacking properties ?
Melamine formaldehyde resin
Phenolic resin
Epoxy resin
Alkyd resin
✅ The correct answer is option A.
Amino resins are used in paper treatment to improve its
wet tear and bursting strength.
folding endurance
wet rub resistance
all (a), (b) & (c)
✅ The correct answer is option D.
__________ moulding is used for shaping of thermosetting plastics exclusively.
Compression
Injection
Transfer
Extrusion
✅ The correct answer is option C.