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# Which of the following polymers can be used for lubrication and as an insulator?

$\begin {array} {1 1} (a)\;SBR & \quad (b)\;PVC \\ (c)\;PTFE & \quad (d)\;PAN \end {array}$

PTFE commonly known as Teflon is used as lubricant and insulator
Ans : (c)