Identify the addition polymer from the following:

Which among the following polymers is heat resistant and used to obtain oil seals?

Which among the following statements is $NOT$ true about high density polythene?

Phenol and formaldehyde undergo condensation to give a polymer $(A)$ which on heating with formaldehyde gives a thermosetting polymer $(B)$. Name the polymers. Write the reactions involved in the formation of $(A)$. What is the structural difference between the two polymers?

Which polymer is used in the manufacture of paints and lacquers?

Which of the following is currently used as a tyre cord?