Question

This section contains multiple choice questions. Each question has 4 choices (a), (b), (c) and (d), out of which ONLY ONE is correct. Orlon is (a) PAN (b) PVC (c) PMMA (d) SBR

Short answer

Answer: (a) PAN

Step-by-step solution

Understanding the given options

We have four options, each representing a material by its abbreviation. Let's understand what each abbreviation stands for: (a) PAN - Polyacrylonitrile (b) PVC - Polyvinyl chloride (c) PMMA - Polymethyl methacrylate (d) SBR - Styrene-butadiene rubber

Identifying the correct material

Now let's find out which of these materials is Orlon. Orlon is a type of synthetic fiber made from polyacrylonitrile, which is represented by the abbreviation PAN. So, the correct answer is (a) PAN.

Key concepts

Synthetic Fibers

Synthetic fibers are materials made from synthesized polymers or small molecules. Rather than being derived directly from natural substances, these fibers are primarily man-made. They are widely used due to their durability, elasticity, and resistance to various environmental factors.
Here are some key features:

• Durability: Synthetic fibers are known for their strength, which makes them last long and resist damage.
• Elasticity: Many synthetic fibers can stretch considerably without breaking, making them ideal for various applications.
• Moisture Resistance: They often repel moisture, which prevents molds and decay.
• Versatility: They can be engineered for specific uses, from clothing to industrial applications.

Popular synthetic fibers include nylon, polyester, and acrylic. These fibers mimic certain properties of natural fibers like wool or silk, providing a wide range of options for manufacturers. With technological advancements, synthetic fibers have continually improved in terms of comfort and functionality.

Polyacrylonitrile

Polyacrylonitrile, often abbreviated as PAN, is a synthetic polymer predominantly used in the production of synthetic fibers. It is flexible, strong, and resists damage from sunlight and weather. Polyacrylonitrile is crucial in manufacturing fibers like Orlon.
Some essential characteristics of PAN include:

• Tensile Strength: PAN fibers are robust, making them suitable for heavy-duty applications.
• Weather Resistance: They resist fading and degradation caused by prolonged exposure to outdoor elements.
• Lightweight: Despite their strength, PAN fibers are light, which is advantageous in making textile products.
• Thermal Stability: PAN has good thermal properties that allow it to be used in high-temperature situations.

In addition to textiles, Polyacrylonitrile is vital in other applications like making carbon fibers, which are used in high-performance items. The versatility of PAN underscores its importance in both everyday and high-tech industries.

Multiple Choice Questions

Multiple choice questions (MCQs) are a popular method of assessment that provides a simple way to evaluate understanding and recall. These questions present a query along with a set of possible answers, typically among which only one is correct.
Here are some benefits of using MCQs:

• Efficiency: They can be quickly completed and graded, allowing for swift assessments.
• Objective Evaluation: Since there's typically only one right answer, they help reduce grading bias.
• Wide Coverage: MCQs can cover a broad range of topics, making them useful for comprehensive evaluations.
• Student Engagement: They encourage students to think critically and eliminate incorrect options to find the right answer.

In the context of learning about synthetic fibers, MCQs can help reinforce knowledge about specific materials, like identifying Orlon as a product of Polyacrylonitrile (PAN). This type of questioning also supports quick revision and self-assessment for students preparing for exams.