Multiple choice

Match the lists: List A List BSacks| | 2. Cross-linked polyethylene| B. Plastic bags| | 3. Low-density polyethylene| C. Domestic water piping| | 4. Medium-density polyethylene| D. Plastic bottles|

  1. 1 - C, 2 - A, 3 - B, 4 - D

  2. 1 - D, 2 - B, 3 - A, 4 - C

  3. 1 - D, 2 - C, 3 - A, 4 - B

  4. 1 - C, 2 - A, 3 - D, 4 - B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. High-density polyethylene (HDPE) is a polyethylene thermoplastic made from petroleum,  Known for its large strength to density ratio, HDPE is commonly used in the production of plastic bottles.
    1. Cross-linked polyethylene, commonly abbreviated PEX or XLPE, is a form of polyethylene with cross-links. It is formed into tubing and is used predominantly in building pipework and services, domestic water piping, and insulation for high tension (high voltage) electrical cables.
    2. Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene. Its most common use is in plastic bags.
    3. Medium-density polyethylene (MDPE) is a type of polyethylene, which is less dense than HDPE. Stress cracking resistance is better than that of HDPE. MDPE is typically used in sacks, shrink film, packaging film etc.

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