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Consider the following pairs regarding plastics and their respective characteristics:

1. Polycarbonate : Poor impact resistance

2. PTFE : Low Coefficient of friction

3.Polypropylene: Excellent fatigue strength.

         Which of the above pairs is/are correctly matched?                       

         (a) 1 only                        (d) 2 only

         (c) 1 and 3                      (d) 2 and 3

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