Science

8th

grade

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Synthetic fibres and Plastics

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  • 1. Multiple Choice
    1 minute
    1 pt
    Image

    See the figure given below and select the correct statements regarding polymers.

    1. Figure (X) shows structure of a monomer while figure (Y) shows structure of a polymer.

    2. Small boxes in the structure represent monomers that are joined to give a polymer.

    3. Figure (X) shows structure of a linear polymer while (Y) shows structure of a cross-linked polymer.

    1 and 2 only

    1 and 3 only

    2 and 3 only

    All are correct.

  • 2. Multiple Choice
    1 minute
    1 pt

    Read the given statements and mark the appropriate answer.

    Statement 1: Fabric made from this polyester does not get wrinkled easily.

    Statement 2: Polyester is a natural fibre.

    Both statements 1 and 2 are true and

    statement 2 is the correct explanation

    of statement 1.

    Both statements 1 and 2 are true

    but statement 2 is not the correct

    explanation of statement 1.

    Both statements 1 and 2 are false.

    Statement 1 is true and statement 2

    is false.

  • 3. Multiple Choice
    30 seconds
    1 pt

    Atul was climbing mountain and he wondered about the strength of rope in his hand which was stronger than a steel wire. This rope would have been made up of:

    Polyester

    Nylon

    Rayon

    Cotton

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