Which of the following polymers contains the | vedclass

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(A) The $-CO-NH-$ linkage is characteristic of amide groups,which are found in polyamides (like Nylon) and certain condensation polymers.Urea formalde

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Urea formaldehyde resin

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(A) The $-CO-NH-$ linkage is characteristic of amide groups,which are found in polyamides (like Nylon) and certain condensation polymers.Urea formaldehyde resin is formed by the condensation reaction between urea and formaldehyde.The structure of urea formaldehyde resin is: $[-NH-CO-NH-CH_2-]_n$.This structure clearly contains the $-CO-NH-$ linkage.Therefore,the correct option is $A$.

Which of the following polymers contains the $-CO-NH-$ linkage in it?

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