Match the column I and II (Matrix)
`{:(,"Column I",,"Column II"),((a),-NO_(2),(p),m " effect"),((b),-O^(-),(q),+m " effect"),((c),-O-CH_(3),(r),- I " effect"),((d),-C-=N,(s),-I" effect):}`

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Correct Answer - a-p ,s ; b-q,r ; c-q,s ; d-p,s
`a rarrp, s, b rarr q,r, crarrq,s,d rarr p,s`

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