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 biodegradable materials are categorized as follows:

1. Cotton, silk, nylon, leather: Cotton and silk are biodegradable. Nylon, a synthetic polymer, and leather, due to its treatment, are not readily biodegradable.

2. Wool, wood, soap, wheat: Wool, wood, and wheat are biodegradable. Soap, derived from natural fats and oils, also decomposes easily.

3. Banana, cat, rat, tree: Banana, tree, and rat are biodegradable organic materials. A cat, like other animals, undergoes biodegradation of its organic matter.

4. Soap, detergent, silk, polyester: Soap and silk are biodegradable. The biodegradability of detergents varies with their chemical makeup. Polyester is a synthetic fabric that is not biodegradable.

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