1.

Nylon - 6,6 is a polyamide obainted by the reaction ofA. `COOH(CH_(2))COOH+H_(2)NC_(6)H_(4)NH_(2)-(p)`B. `COOH(CH_(2))_(4)COOH+NH_(2)(CH_(2))_(6)NH_(2)`C. `COOH(CH_(2))_(6)COOH+NH_(2)(CH_(2))_(4)NH_(2)`D. `COOHC_(6)H_(4)COOH-(p)+NH_(2)(CH_(2))_(6)NH_(2)`

Answer» Correct Answer - B
The monomer units of nylon-66 are obtained by the reaction of hexamethylene diamine and adipic acid.
Nylon-66 contain polyamide bond and show condensation.
`nH_(2)underset("Hexamethylene diamine")(-(CH_(2))_(6))NH_(2)+`
`nHOOC-underset("Adipic acid")((CH_(2))_(4))COOHto`
`-[overset(H)overset(|)N-(CH_(2))_(6)-underset("Nylon-66")NHCO-(CH_(2))_(4)-overset(O)overset(||)C-]_(n)`


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