a thermosetting material.
a condensation polymerisation product.
made by employing emulsion polymerisation.
none of these.
✅ The correct answer is option C.
Polymer Technology MCQs
Branched chair polymers as compared to linear polymers have
higher melting point.
higher tensile strength.
lower density.
none of these.
✅ The correct answer is option C.
The conversion of caprolactum in the above case is about __________ percent.
25
50
70
90
✅ The correct answer is option D.
A copolymer of vinyl and vinylidine chloride is called
treylene
orlon
saran
dacron
✅ The correct answer is option C.
In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher
densities
melting point
tensile strength
hardness, rigidity & brittleness
✅ The correct answer is option D.
__________ is normally used for the manufacture of refrigerator components and transistor parts.
Polyproylene
Polystyrene
Polyester
Polyurathene
✅ The correct answer is option B.
SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at
1:03
3:01
1:02
2:01
✅ The correct answer is option A.
Styrene butadiene rubber (SBR) is never used for making
coated fabrics
front wheel tyres of aeroplanes (i.e., heavy duty tyres)
gaskets
soles of shoes
✅ The correct answer is option B.
Which of the following is generally not used as eord for synthetic rubber tyre casing ?
Dacron
Nylon
Cellulose
None of these
✅ The correct answer is option C.
Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces
epoxy resin
polyamide
alkyd resin
phenolic resin
✅ The correct answer is option C.