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WorksheetsCARBON COMPOUNDS
Total questions: 10
Worksheet time: 10mins
The windscreen of a car is made of
Glass
Perspex
PVC
Polypropene
What makes neoprene suitable for use as gas pipes?
A good electrical insulator
Easily vulcanized and not easily oxidized
Resistant to heat and does not react with oils and solvents
Impermeable to water
Why is synthetic rubber suitable for making windscreen laminating film?
Not easily vulcanized
Not easily oxidized by oxygen or the ozone
Resistant to alkalis and acids
Impermeable to water and gas
Which is a natural polymer?
Perspex
Protein
PVC
Neoprene
What are the characteristics of thermoset plastics?
I. Can be softened only once by heating
II. Can be moulded repeatedly into the shapes required
III. Hard and resistant to heat
I and II
I and III
II and III
I, II and III
How can pollution from used plastic wrappers be prevented?
I. By compressing and burying the plastic wrappers underground
II. By burning the plastic wrappers in an incinerator
III. By recycling and using biodegradable plastic
I and II
I and III
II and III
I, II and III
Which of the following materials is suitable for making aeroplane window?
Perspex
PVC
Melamine
Glass
Diagram 1 shows a reversible chemical reaction.
X-Polymerisation Y-Depolymerisation
X-Depolymerisation Y-Polymerisation
X-Depolymerisation Y-Hydrolysis
X-Polymerisation Y-Condensation
Natural rubber is soft, elastic and not heat resistant. How can it be made harder, more elastic and more heat resistant?
Heat it with carbon
Add vinegar with it
Immerse it in ammonia solution
Heat it with sulphur
Why is polystyrene suitable as food containers
It is thermoset plastic
It can be moulded and recycled repeatedly
It is heat resistant
It is non-flammable
