Question

Disposable plastic plates should not be used because
(a) they are made of materials with light weight
(b) they are made of toxic materials
(c) they are made of biodegradable materials
(d) they are made of non-biodegradable materials

NCERT Class X
Science - Exemplar Problems

Chapter_Our Environment

Answer 1

d] they are made up of non biodegradable materials

Answer 2

‘Disposable plastic plates’ should not be used because they are made of ‘non-biodegradable materials’.

Option: (d)

Explanation:

• These plastic plates are used one time. Then they become a part of waste. They are not broken down by microorganisms.

• As a result they do not degrade and are not taken up by the soil particles.  

• Also these objects are macromolecular structures of small particles which are not degraded by animal enzymes.  

• Biodegradable substances include papers, jute and hence the use of them should be widely accepted as compared to non-degradable substances.

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