Question

Which of the following is resistant to boiling aqua-regia

• A. Polythene
• B. Perspex
• C. Teflon
• D. Bakelite

Answer 1

Answer: (C)

Teflon

Answer 2

Teflon is flexible, inert to solvents and to boiling with acids even to aqua - regia and is stable upto $598K.$