A. Teflon has high thermal stability and chemical inertness.
R. Teflon is a thermoplastic.

Both A and R are correct and R is the correct explanation of the A

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Both A and R are correct but R is not the correct explanation of the A

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A is correct but R is in correct

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A is incorrect but R is correct

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Solution

The correct option is B Both A and R are correct but R is not the correct explanation of the A
Teflon is a thermoplastic which is capable of repeatedly softening on heating and hardening on cooling but Teflon's thermal stability and chemical inertness is due to its high $C - C$ bond energy.

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