Order of reactivity for C-Cl cleavage: chlorobenzene, 2,4-dinitro- and 2,4,6-trinitrochlorobenzene

The same question, asked 2 times: 4 May 2023 S1, 20 Apr 2025 S2. Every wording below, oldest first.

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Question 1
4 May 2023 S1
75 $The correct order of reactivity for reactions involving cleavage of C-Cl bond in following compounds is [Compound I: chlorobenzene; II: 2,4-dinitrochlorobenzene; III: 2,4,6-trinitrochlorobenzene]$
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Question 2
20 Apr 2025 S2
76 $The correct order of reactivity for reaction involving cleavage of C-X. bond in following compounds is (I) (II) (III)$
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