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WorksheetsSynthetic plastics, fibre
Total questions: 20
Worksheet time: 10mins
Cellulose is polymer made up from ______________ as monomer units.
Plant
Animal
Glucose
Sugar
Nylon is made up of from ____________, _____ and _____.
Coal only
Coal, water and air
Coal, water and carbon dioxide
Coal and air only
_____________ is known as artificial silk.
Rayon
Nylon
Cotton
Acrylic
Socks, ropes, tents, toothbrushes, car seat belts etc are made up from _____________.
Rayon
Cotton
Acrylic
Nylon
_________fabric made from this fibre does not get
wrinkled easily. It remains crisp and is
easy to wash.
Acrylic
Polyester
Cotton
Rayon
Polycot is a mixture of
__________and cotton. Polywool is a
mixture of __________ and wool.
PVC
Ester
Polyester
Nylon
___________ fibres are more durable and affordable which
makes them more popular than natural fibres.
Natural
Synthetic
Both 1 and 2
None of these
There are someplastics which when moulded once, can
not be softened by heating. These are called ______ plastics.
Polyester
Thermo-plastics
Polyethene
Thermo-setting
Firemen have coating of ________ plastic to make them
flame resistant.
Bakellite
Nylon
Melamine
Rayon
Plastics are _________conductors of heat and electricity.
Good
Poor
Extremely good
None of these
Teflon is a special plastic on which oil and water do not stick. It is used for non-stick coating on
cookwares.
Bakellite
Melamine
PVC
Teflon
Tin, aluminium, and other metal cans _______years and considered to be __________________.
100-150 years biodegradable
100-150 years non- biodegradable
2-5 months biodegradable
500-550, biodegradabel
Paper takes _____________days and considered as ______________.
10-15 days, Biodegradable
10-30 days, non- Biodegradable
10-30 days, Biodegradable
50-55 days, Biodegradable
Reduce, Reuse, Recycle and __________.
Recover
Recycle
Reuse
Reduce
All the synthetic fibres are prepared by a number of processes using raw materials of petroleum origin, called
__________.
Petrochemicals
Nylon
Rayon
Cotton
Many such small units combine to form a large single unit called a ___________.
Polymer
Polyester
Acrylic
Monomer
Silk fibre obtained from __________________.
Cellulose
Silkworm
Plant
Animal
Although ________________ is obtained from a natural source,
wood pulp, yet it is a man-made fibre.
Nylon
Rayon
Acrylic
Polyester
_____________is mixed with cotton to make bed sheets or mixed with wool to make carpets.
Cotton
Nylon
Rayon
Polymer
__________________ is a popular polyester. It can be drawn into very fine fibres that can be woven like any other yarn.
Rayon
Acrylic
Terelyene
Polymer
