What type of plastic is lightweight and resists organic solvents?

• A. HDPE
• B. ABS
• C. PP
• D. PVC

Answer: (C)

Polypropylene stands out because it combines a low density with strong resistance to many organic solvents. Its lightweight nature makes it easy to handle, while its chemical structure remains stable when exposed to fuels, oils, and many solvents, so it won’t swell or degrade easily. That practical combination is why polypropylene is widely used for chemical containers, lab ware, and similar parts. Other plastics here can be lighter or tougher in some ways, but they don’t match polypropylene for being both very light and broadly solvent-resistant.