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WorksheetsSynthetic fibres and plastics
Total questions: 50
Worksheet time: 38mins
Fibres that are made by human beings are called (a)
Most fibres are obtained from
Coal, petroleum and natural gas
Coal, water and air
Coal, petroleum, water
Synthetic fibre consists of multiple units which are joined to form a single unit called (a)
Examples of synthetic fibre
Silk wool and rubber
Rayon nylon polyester acrylic and spandex
Rayon is also called as (a)
Rayon is prepared from
(a)
Cellulose comes from
(a)
Properties of rayon
It is shiny and lustrous and waterproof
It is elastic in nature
It is shiny and lustrous, it absorbs sweat
Uses of rayon
Rayon is used for making suits jacket scarves home furnishing
Used for making wires tennis rackets ropes fishing nets
(a) was the first true synthetic fibre
Nylon was first produced in the (a)
Nylon is prepared at the (a) company
Nylon was prepared from
Coal, water and air
Coal petroleum and natural gas
Properties of nylon
Elastic, lustrous and waterproof
Elastic, lustrous and shiny
Uses of nylon
Bandages, bed sheets
Making of socks, tents, umbrella
(a) is a group of different synthetic fibres
The most commonly used polyester is
(a)
Blend of terylene and cotton
(a)
Terylene is blended with wool to make
(a)
Properties of polyester
Strong lightweight and has good elasticity
Strong lightweight waterproof and elastic
Uses of polyester
Used for making swimming costumes bed sheets badminton wire
Used for making lightweight sales used for making magnetic recording tapes ,video cassettes and floppy disks
(a) is used for making conveyor belts
(a) is commonly used for making shirt skirts and other dress materials
(a) is used for making formal suits
Acrylic fibres also known as ______ and ______
(a)
Properties of acrylic fibre
Warm soft light and flexible
Warm soft elastic and flexible
Uses of acrylic fibre
Used for making sweaters socks shawls carpets and blankets
Used for making socks bed sheets
Spandex also known as (a)
Spandex was invented by the (a)
Spandex was invented in the year
(a)
Properties of spandex
Strong lightweight and racist wrinkling
Used for making swimming costumes good elasticity
In plastic the arrangement of individual units may be____
Linear or cross linked
Linear or straight linked
_____ polymers have side chains
Cross linked polymers
Straight linked polymers
Linear linked polymers
Cross linked polymers are how many types
2
3
______ and _____ are types of plastics
(a)
PET (a)
HDP (a)
LDPE
(a)
PVC (a)
PP (a)
PS (a)
Plastics are
Non biodegradable
Biodegradable
Burning of plastic releases
Toxic gases
Waste gases
Natural gases
____ and ____ are two ways of countering the harmful effects associated with plastic disposal
Burning plastics and not using repeated plastics
Reducing the usage of plastics and recycling plastic objects
To a recycling of plastic garbage two types of beams are made available by the municipality. what are they
Green bin and blue bin
Red and green bin
Blue and red bin
Biodegradable waste such as food items should be thrown in_____ bin
Blue bin
Green bin
Recyclable waste such as plastic and glass should be thrown in____
Blue bin
Green bin
Plastics are accumulated on
Land blocks and drain water from seeping into the ground
Land polluted air air and fire
Most plastics are
Flammable
Inflammable
Plastics are are _____ conductors of electricity
Poor
Good
