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Question

In the following groups of materials, which group contains only biodegradable items?


A

Wool, grass, paper

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B

Polythene, detergent, PVC

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C

Plastic, detergent, grass

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D

Plastic, bakelite, DDT

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Solution

The correct option is A

Wool, grass, paper


The correct option is A.

Explanation of correct option:

  1. A substance that can be broken down by bacteria or other natural creatures without contributing to pollution is said to be biodegradable.
  2. Wool grass and paper are examples of biodegradable substances.
  3. They do not contribute to pollution and decompose to improve the fertility of the soil.

Explanation of incorrect options:

Option B:

  1. Polythene, detergent, and PVC are examples of non-biodegradable substances.
  2. A non-biodegradable material is any form of substance that is a cause of pollution and cannot be degraded by natural organisms.

Option C:

  1. Plastic and detergent are non-biodegradable while the grass is a biodegradable material.
  2. Hence, this is not a group of biodegradable substances.

Option D:

  1. Plastic, bakelite, and DDT do not undergo biodegradation.
  2. Hence, these are a group of non-biodegradable substances.

Final answer: Wool, grass, and paper are a group of biodegradable substances.


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