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Q1. Which of the following is a characteristic of cross-linked polymers? (2023)
Solution:
Cross-linked polymers have a three-dimensional network structure, which gives them a high melting point and strength.
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Q2. What type of polymer is rubber classified as? (2019)
Solution:
Rubber is classified as an elastomer, which is a type of polymer that exhibits elastic properties.
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Q3. Which of the following is a characteristic of addition polymers? (2019)
Solution:
Addition polymers are formed from monomers that contain double bonds, which open up to form long chains.
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Q4. Which of the following is NOT a characteristic of polymers? (2023)
Solution:
Polymers typically have low solubility in water, especially synthetic ones.
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Q5. What is the repeating unit of polystyrene? (2021)
Solution:
The repeating unit of polystyrene is derived from the monomer styrene, which has the structure -CH=CH2-.
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Q6. Which of the following is a property of addition polymers? (2022)
Solution:
Addition polymers are formed from unsaturated monomers through addition reactions.
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Q7. Which of the following polymers is used in the production of rubber? (2019)
Solution:
Natural rubber is a polymer made from the latex of rubber trees and is widely used in the production of rubber products.
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Q8. Which of the following polymers is used in the manufacture of rubber? (2019)
Solution:
Natural rubber is a polymer made from the latex of rubber trees and is widely used in the manufacture of rubber products.
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Q9. Which polymer is commonly used in the production of synthetic fibers? (2023)
Solution:
Nylon is a synthetic polymer widely used in the production of synthetic fibers for clothing and textiles.
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Q10. Which of the following is not a step in the process of condensation polymerization? (2023)
Solution:
Addition of monomers is not a step in condensation polymerization; it is characteristic of addition polymerization.
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