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JEEMAIN and NEET
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NEET PAST PAPERS
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2009
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Q)
Structures of some common polymers are given which one is not correctly presented ?
( A )
( B ) Teflon
$( -CF_2 – CF_2- )_n$
( C ) Nylon 66
$[– NH(CH_2)_6NHCO(CH_2)_4 – CO – ]_2$
( D )
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