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Polymers Quiz - ICSE Class 12 Chemistry

Free practice quiz: Polymers (ICSE Class 12 Chemistry). 50 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

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Sample questions

  1. Which of the following polymers is an addition polymer formed by the free radical polymerization of vinyl chloride?

    1. Nylon-6,6
    2. Polyvinyl chloride (PVC)
    3. Bakelite
    4. Dacron
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    Answer: B. Polyvinyl chloride (PVC)

    Vinyl chloride (CH2=CHCl) undergoes addition polymerization through a free radical mechanism to form polyvinyl chloride (PVC). Nylon-6,6 is a condensation polymer, Bakelite is a thermosetting polymer formed from phenol and formaldehyde, and Dacron is a polyester formed from ethylene glycol and terephthalic acid.

  2. Which synthetic polymer is commonly used in non-stick cookware coatings?

    1. Polyethylene terephthalate (PET)
    2. Polyvinyl chloride (PVC)
    3. Polytetrafluoroethylene (PTFE)
    4. Polystyrene (PS)
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    Answer: C. Polytetrafluoroethylene (PTFE)

    Polytetrafluoroethylene (PTFE), commonly known by the brand name Teflon, is known for its non-stick properties and is widely used in cookware coatings.

  3. What are the repeating units in polyacrylonitrile, commonly used in acrylic fibers?

    1. CH2=CH-CN
    2. CH2=CH-Cl
    3. CH2=CH-CH3
    4. CH2=CH-COOCH3
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    Answer: A. CH2=CH-CN

    Polyacrylonitrile is formed by the addition polymerization of acrylonitrile, whose chemical formula is CH2=CH-CN. The repeating unit in the polymer is -[CH2-CH(CN)]-.

  4. The polymer formed by the ring-opening polymerization of lactams is a type of:

    1. Polyester
    2. Polyether
    3. Polyamide
    4. Polyurethane
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    Answer: C. Polyamide

    Lactams are cyclic amides. When they undergo ring-opening polymerization, they form polyamides, with Nylon-6 being a prime example derived from caprolactam.

  5. The reaction of diisocyanates with polyols produces which type of polymer?

    1. Polyester
    2. Polyamide
    3. Polyurethane
    4. Polycarbonate
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    Answer: C. Polyurethane

    Polyurethanes are formed by the reaction of diisocyanates (e.g., toluene diisocyanate, TDI) with polyols (compounds with multiple hydroxyl groups).

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