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Assertion : Rayon is a semisynthetic polymer whose properties are better than natural cotton.
Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.
Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.
- a)Both assertion and reason are correct, and the reason is the correct explanation for the assertion.
- b)Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.
- c)Assertion is incorrect statement, but the reason is correct.
- d)Both assertion and reason are incorrect.
Correct answer is option 'A'. Can you explain this answer?
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Assertion : Rayon is a semisynthetic polymer whose properties are bett...
Assertion: Rayon as a Semisynthetic Polymer
Rayon is indeed a semisynthetic polymer derived from natural cellulose, primarily sourced from wood pulp. Its properties are often considered superior to those of natural cotton in various applications.
Properties of Rayon vs. Cotton
- Strength and Durability: Rayon fibers have a higher tensile strength than cotton when wet, making them more durable in certain conditions.
- Aesthetic Appeal: Rayon has a luxurious drape and sheen, often resembling silk, which enhances its aesthetic qualities compared to the matte finish of cotton.
- Moisture Absorption: While both fabrics absorb moisture, rayon can feel cooler against the skin, which is advantageous in warm climates.
Reason: Acetylation of Cellulose
Acetylation is a chemical modification process that involves the introduction of acetyl groups to the cellulose molecule. This modification can enhance the mechanical and aesthetic properties of cellulose fibers.
Impact of Acetylation
- Improved Stability: Acetylation can increase the thermal stability and water resistance of cellulose fibers.
- Enhanced Texture: It can also improve the softness and flexibility of the fibers, making them more comfortable to wear.
- Color Retention: Acetylated fibers tend to retain dyes better, resulting in richer colors.
Conclusion
Both the assertion and reason are accurate. The assertion highlights the advantages of rayon over natural cotton, while the reason explains how acetylation enhances cellulose properties, contributing to rayon's superior qualities. Thus, the correct option is (a): Both assertion and reason are correct, and the reason is the correct explanation for the assertion.
Rayon is indeed a semisynthetic polymer derived from natural cellulose, primarily sourced from wood pulp. Its properties are often considered superior to those of natural cotton in various applications.
Properties of Rayon vs. Cotton
- Strength and Durability: Rayon fibers have a higher tensile strength than cotton when wet, making them more durable in certain conditions.
- Aesthetic Appeal: Rayon has a luxurious drape and sheen, often resembling silk, which enhances its aesthetic qualities compared to the matte finish of cotton.
- Moisture Absorption: While both fabrics absorb moisture, rayon can feel cooler against the skin, which is advantageous in warm climates.
Reason: Acetylation of Cellulose
Acetylation is a chemical modification process that involves the introduction of acetyl groups to the cellulose molecule. This modification can enhance the mechanical and aesthetic properties of cellulose fibers.
Impact of Acetylation
- Improved Stability: Acetylation can increase the thermal stability and water resistance of cellulose fibers.
- Enhanced Texture: It can also improve the softness and flexibility of the fibers, making them more comfortable to wear.
- Color Retention: Acetylated fibers tend to retain dyes better, resulting in richer colors.
Conclusion
Both the assertion and reason are accurate. The assertion highlights the advantages of rayon over natural cotton, while the reason explains how acetylation enhances cellulose properties, contributing to rayon's superior qualities. Thus, the correct option is (a): Both assertion and reason are correct, and the reason is the correct explanation for the assertion.
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Assertion : Rayon is a semisynthetic polymer whose properties are better than natural cotton.Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.a)Both assertion and reason are correct, and the reason is the correct explanation for the assertion.b)Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.c)Assertion is incorrect statement, but the reason is correct.d)Both assertion and reason are incorrect.Correct answer is option 'A'. Can you explain this answer?
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Assertion : Rayon is a semisynthetic polymer whose properties are better than natural cotton.Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.a)Both assertion and reason are correct, and the reason is the correct explanation for the assertion.b)Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.c)Assertion is incorrect statement, but the reason is correct.d)Both assertion and reason are incorrect.Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Assertion : Rayon is a semisynthetic polymer whose properties are better than natural cotton.Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.a)Both assertion and reason are correct, and the reason is the correct explanation for the assertion.b)Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.c)Assertion is incorrect statement, but the reason is correct.d)Both assertion and reason are incorrect.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion : Rayon is a semisynthetic polymer whose properties are better than natural cotton.Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.a)Both assertion and reason are correct, and the reason is the correct explanation for the assertion.b)Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.c)Assertion is incorrect statement, but the reason is correct.d)Both assertion and reason are incorrect.Correct answer is option 'A'. Can you explain this answer?.
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