Rank the following acid derivative in decreasing order of reactivity towards nucleophile :

I V > I > I I > I I I

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I I > I I I > I > I V

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I I I > I I > I > I V

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I > I I > I I I > I V

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Solution

The correct option is B $I I I > I I > I > I V$

More the -I effect the nucleophile attacks faster and as Cl- is good leaving group.
So the order of reactivity is III>II>I>IV

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(I) HCOOH

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(C H_{3})_{3} C - C l . . . . . . . . . . (i v)

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