1.

Which is the repeating unit in Neoprene ?

Answer»

`(CH_(2)-overset(overset(CH_(3))(|))(C)=CH-CH_(2))`
`(overset(overset(CL)(|))(CH)-CH=CH-CH_(2))`
`(CH_(2)-overset(overset(Cl)(|))(C)=overset(overset(Cl)(|))(C)-CH_(2))`
`(CH_(2)-overset(overset(Cl)(|))(C)=CH-CH_(2))`

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