Question

The polymer X consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer X is:

• A. Polyacrylonitrile
• B. Polyterephthalate
• C. Low density polyethylene
• D. High density polyethylene

Hint:

Polymerization under high pressure and specific catalysts leads to the formation of low-density polymers with high flexibility.

Answer 1

The Correct Option is C

- Low density polyethylene (LDPE) is made by free radical polymerization of ethylene. It is prepared under high pressure and with a catalyst like triethylaluminium and titanium tetrachloride.
- LDPE has a high degree of branching, making it less dense and more flexible.
Thus, the correct answer is (3), Low density polyethylene.