Synthetic Polymer Identification

The question asks to identify a synthetic polymer commonly used in industry.

• Synthetic polymers are man-made polymers, synthesized through chemical reactions.
• Natural polymers are derived from plants and animals.

Analyzing Polymer Options

Let's examine each option:

• Starch: A complex carbohydrate, it is a natural polymer found in plants.
• Nylon-6,6: This is a well-known synthetic polymer, widely manufactured and used industrially for items like textiles, ropes, and engineering components.
• Cellulose: The primary component of plant cell walls, cellulose is a natural polymer. It has industrial uses but is not man-made.
• Rubber: While synthetic rubber exists, the term 'rubber' often refers to natural rubber (from latex), which is a natural polymer. Nylon-6,6 is a more definitive example of a synthetic industrial polymer.

Conclusion

Based on the analysis, Nylon-6,6 is the clear example of a synthetic polymer used extensively in industry.