The compound with which hexamethylene diamine on polymerization gives nylon-6,6 is:

citric acid

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adipic acid

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oxalic acid

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tartaric acid

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Solution

The correct option is A adipic acid
Nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid, which give nylon 66 its name.

$n H O O C - {(C H_{2})}_{4} - C O O H + n H_{2} N - {(C H_{2})}_{6} - N H_{2}$
$\to [- O C - {(C H_{2})}_{4} - C O - N H - {(C H_{2})}_{6} - N H -]_{n} + 2 n H_{2} O$

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The compound with which hexamethylene diamine on polymerization gives nylon-6,6 is:

The correct option is A adipic acidNylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid, which give nylon 66 its name.nHOOC−(CH2)4−COOH+nH2N−(CH2)6−NH2 →[−OC−(CH2)4−CO−NH−(CH2)6−NH−]n+2nH2O