Which of the following molecule(s) has/have d | vedclass

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(C) lone pair of electrons is considered delocalised if it is in conjugation with a $\pi$-bond (i.e.,separated by one single bond).In option $(a)$, th

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$C_6H_7OCH_3$

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(C) lone pair of electrons is considered delocalised if it is in conjugation with a $\pi$-bond (i.e.,separated by one single bond).In option $(a)$, the oxygen lone pair is separated from the carbonyl group by a $-CH_2-$ group, so it is localised.In option $(b)$, the nitrogen lone pair is separated from the carbonyl group by a $-CH_2-$ group, so it is localised.In option $(c)$, the oxygen atom is directly attached to the double bond of the ring. The lone pair on oxygen is in conjugation with the $\pi$-electrons of the double bond, making it delocalised.In option $(d)$, the nitrogen lone pair is separated from the double bond by a $-CH_2-$ group, so it is localised.Therefore, only the molecule in option $(c)$ has a delocalised lone pair.

Which of the following molecule$(s)$ has/have delocalised lone pair$(s)$ of electrons?

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