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WorksheetsSynthetic fibres and plastics
Total questions: 27
Worksheet time: 14mins
Cellulose extracted from agricultural products is treated with _________ and ___________in the process of making rayon.
Caustic soda and carbon disulphide
Formaldehyde and amino acids
Nylon-66 is mainly made from______________________
Polyglyconitrile and isocynate pre-polymer
Adipic acid and hexamethyldiamine
Polystyrene and polytetrafloroethylene
Petroleum and urea
How much urea is required to make 1kg melamine? (type the number and unit)
(a)
How much can a Lycra cloth stretch?
800%
700%
600%
500%
A process in which small monomers link together to form a long chain is called (a)
Cellulose extracted from agricultural products is treated to form (a) in the process of making rayon.
Rayon was first discovered by (a) .
Name the thermoset plastic that is represented above.
Melamine
Bakelite
Epoxy
What kind of acid is used with R-OH (alcohol) in the process of making polyesters?
(a)
Formaldehyde and phenol makes ________
Melamine
Bakelite
Epoxy
PVC
What was the initial raw compound used to make Chardonnet's silk?
Nitrocellulose
cuproammonium hydroxy carbonate
cellulose tetraacetate
Which compunds are used to make the above compound? What are its byproducts?
CCl4 and alchahol compounds are used to make the above compound. water and O2F2 are the by products.
Urea and ethane compounds are used to make the above compound. CS2 and polyglycol are the by products.
Diisocynate and polyol compounds are used to make the above compound. Ammonia and CO are the by products.
What all are mainly used in lycra synthesis?
(OH) group compounds and acetate compounds
diamino acids and DIisocynate
Nitrogen and magnesium stearate
all of the above
pick the synthetic radicals used semi-synthetic fibre out of the following
cotton
polyester
teryline
wool
Which is artificial wool and artificial silk?
Nylon
Rayon
Acrylic
Polyester
How are synthetic fibres made
By using plants
By using petrochemicals
By using humans
By using plastics
Melamine's high nitrogen content make it ____________ resistant
fire
water
weather
Cryogenous environment
What is chemical name of teflon?
polytetrafluoroethylene
polydifluoromonocarbide
polytetracarbonmonofluoride
Hermann mark was father of ________ and hermann staudinger was father of ________.
polymer chemistry and polymer physics
synthetic chemistry and synthetic physics
textile chemistry and textile physics
Polyester synthesis takes place in ________. (Atmospheric conditions)
Vacuum
low pressure
very low pressure
high pressure
very high pressure
_______,________and _______ are 3 main variants of acrylion.
acrylonitrile, vinyl acetate and methyl acrylate.
acrilovinyl chloride, vinylidene chloride or vinyl bromide III acrylate
acrylodimethylformamide, vinylidene chloride and methyl acrylate
Mention the full name of this polyester used in storing thing.
Polystyrene urethane
Polyethylene teraphthalate
Polydietheyl benzonate
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