Final answer:
Based on fabric composition, wool is predicted to show the darkest color with methyl orange dye due to ionic bonding, nylon has a moderate dye uptake, and cotton the least, resulting in Option 2 (Cotton-2, Nylon-3, Wool-1) being the correct ranking for predicted color intensity.
Step-by-step explanation:
Predicting the relative color intensity produced by methyl orange on different fabrics such as cotton, nylon, and wool requires an understanding of the chemistry behind dye uptake and fabric composition. While the question does not provide specific details about how methyl orange interacts with different fabric materials, some general knowledge can be applied:
- Cotton, being a cellulose-based natural fiber, may not have a strong affinity for a synthetic dye like methyl orange compared to protein-based fibers.
- Nylon, a synthetic polymer, can often be dyed effectively with acidic dyes due to its amide groups binding with the dye molecules.
- Wool, a protein-based fiber, typically has a high affinity for acidic dyes such as methyl orange because of ionic bonding between the dye and the amino acids in the wool.
Based on these general principles, wool would likely show the darkest color intensity when dyed with methyl orange, followed by nylon, and then cotton, which would likely show the lightest color intensity. Therefore, Option 2 (Cotton-2, Nylon-3, Wool-1) will be the predicted order of fabric color intensity from lightest to darkest.