Multiple choice

Match the polymers in Group-I with glass transition temperatures (Tg in oC) given in Group-II ||| |---|---| |Group-I |Group-II| |A. PTFE|1. -35| |B. PVDF|2. 115| |C. PSF|3. 47| |D. Nylon-6|4. 185|

  1. A - 2, B - 1, C - 4, D - 3

  2. A - 2, B - 4, C - 1, D - 3

  3. A - 1, B - 2, C - 4, D - 3

  4. A - 4, B - 1, C - 2, D - 3

  5. A - 4, B - 2, C - 1, D - 3
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A Correct answer
Explanation

Polytetrafluoroethylene (PTFE) has the glass transition temperature of 115 oC. The glass transition temperature of polyvinylidene fluoride or polyvinylidene difluoride (PVDF) is -35 oC. Polysulphone (PSF) has the glass transition temperature of 185 oC. The glass transition temperature of nylon-6 is 47 oC. Hence, the representation of codes A - 2, B - 1, C - 4, D - 3 is the correct answer.

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