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JEEMAIN and NEET
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JEEMAIN PAST PAPERS
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2007
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Q)
Which of the following is the correct order of decreasing $S_N2$ reactivity ? <br> (X = a halogen)
( A ) $RCH_2X > R_2CHX > R_3CX$
( B ) $R_3CHX > R_3CX > RCH_2X$
( C ) $RCH_2X > R_3CX > R_2CHX$
( D ) $R_3CX > R_2CHX > RCH_2X$
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