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Railways PYQCBT 1 2020

RRB NTPC · Question 26

Which of the following is used in plastics?

  1. Krypton

  2. Ammonia

  3. Butane

  4. Ethylene

Show answer & explanation

Answer: (D) Ethylene

Explanation

Ethylene (ethene) is polymerised to make polyethylene (polythene), the most common plastic.