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Questions and Answers
  • 1. 
    Condition for orthorhombic is ---
    • A. 

      A b c ,α=β=γ=90°

    • B. 

      a b c ,α β γ 90°

    • C. 

      a=b=c ,α=β=γ 90°

    • D. 

      a=b c ,α=β=γ=90°

  • 2. 
    Thermoplats have increasing ability to deform plastically with / at ----- temperature .
    • A. 

      Increasing

    • B. 

      Decreasing

    • C. 

      Constant

    • D. 

      Shocking

  • 3. 
    --------  are relatively hard and rigid at room temperature and do not soften on heating .
    • A. 

      Thermosets

    • B. 

      Thermoplats

    • C. 

      Elastomers

    • D. 

      Fibres

  • 4. 
    Long chain molecules are randomly oriented in ------
    • A. 

      Plastics

    • B. 

      Fibres

    • C. 

      Elastomers

    • D. 

      Thermosets