The size of one grain in polymers are
Correct answer: A. 3Å to 4Å
- A. 3Å to 4Å
- B. 2Å to 4Å
- C. 4Å to 7Å
- D. 5Å to 8Å
Explanation
In polymers, the crystalline regions, or grains, have a very compact structure due to the orderly arrangement of polymer chains. The typical size of these grains is between 3Å to 4Å. Option A correctly identifies this range. Options B, C, and D either extend beyond or below this range, making them incorrect as they do not accurately reflect the compact nature of polymer grains.
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Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
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