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WAEC Chemistry 2025 Paper

Question : 48

Total: 50

When C

_2

_4

molecule is polymerized, the polymer formed is

Solution:

Concept:

Polymerization of ethene (

\mathrm{C_2H_4}

) produces an addition polymer called polyethene.

Explanation:

Ethene has a carbon-carbon double bond.

During polymerization, many ethene molecules open this double bond and join together.

The repeating unit becomes

-\mathrm{CH_2CH_2}-

Thus, the polymer formed is polyethene.

Answer:

A. polyethene

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