Question

Consider the following groups:

1. Cotton, silk, nylon, leather
2. Wool, wood, soap, wheat
3. Banana, cat, rat, tree
4. Soap, detergent, silk, polyester

The groups of biodegradable material are:

• A. i, ii and iii
• B. ii, iii and iv
• C. i and iv
• D. ii and iii

Answer 1

The Correct Option is D

The groups of biodegradable material are:

1. Cotton, silk, nylon, leather: Among these, cotton and silk are biodegradable, while nylon and leather are not. Nylon is a synthetic polymer and leather, although natural, may take a long time to decompose depending on the treatment.

2. Wool, wood, soap, wheat: Wool, wood, and wheat are biodegradable, while soap is also biodegradable as it is made from natural fats and oils that break down easily.

3. Banana, cat, rat, tree: Banana, tree, and rat are biodegradable (organic materials that decompose naturally). However, a cat, like most animals, is biodegradable but the process involves decomposition of organic matter.

4. Soap, detergent, silk, polyester: Soap and silk are biodegradable. However, detergents, depending on their chemical composition, may or may not be biodegradable. Polyester is a synthetic fabric and is not biodegradable.

Conclusion:
The groups with biodegradable materials are: - Group 2: Wool, wood, soap, wheat - Group 3: Banana, cat, rat, tree - Group 4: Soap, silk