Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C?

7. Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C?
o Aluminium, copper. high silicon iron
o Nickel. monel stainless steel and graphite
o Silicone rubber, teflon, procelain and wood
o Brass, cast iron, mild steel and tin

Ans: D