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What is the repeating unit of polystyrene? (2021)

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Question: What is the repeating unit of polystyrene? (2021)

Options:

  1. -CH2-CH2-
  2. -CH=CH2-
  3. -C6H5-
  4. -C3H6-

Correct Answer: -CH=CH2-

Exam Year: 2021

Solution: 

The repeating unit of polystyrene is derived from the monomer styrene, which has the structure -CH=CH2-.

What is the repeating unit of polystyrene? (2021)

Practice Questions

Q1
What is the repeating unit of polystyrene? (2021)
  1. -CH2-CH2-
  2. -CH=CH2-
  3. -C6H5-
  4. -C3H6-

Questions & Step-by-Step Solutions

What is the repeating unit of polystyrene? (2021)
  • Step 1: Understand that polystyrene is a type of plastic made from a smaller unit called a monomer.
  • Step 2: Identify the monomer for polystyrene, which is called styrene.
  • Step 3: Recognize the chemical structure of styrene, which is -CH=CH2-.
  • Step 4: Realize that when many styrene monomers join together, they form the repeating unit of polystyrene.
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