Consider the following:
I. Cigarette butts
II. Eyeglass lenses
III. Car tyres
How many of them contain plastic?
Consider the following:
I. Cigarette butts
II. Eyeglass lenses
III. Car tyres
How many of them contain plastic?
(a)
Only one
(b)
Only two
(c)
All the three
(d)
None
(c)
Let’s examine each item to determine whether it contains plastic:
I. Cigarette butts
Contain plastic
The filter of most cigarette butts is made of cellulose acetate, a type of plastic.
This plastic is not biodegradable and is a major environmental pollutant.
II. Eyeglass lenses
Contain plastic
Modern eyeglass lenses are commonly made from polycarbonate or CR-39 plastic.
Glass lenses are rare today due to weight and safety concerns.
III. Car tyres
Contain plastic (synthetic polymers)
Tyres are made from a mix of natural rubber and synthetic rubber, the latter being a petroleum-based plastic polymer (like styrene-butadiene rubber).
Tyres also contain other plastic-based additives and fibers.
Final Assessment:
All three items contain plastic.
Final Answer:
(c) All the three
Microtheme: Chemistry —
15 questions asked in Prelims in the past.