Which nitrophenol or phenol has the highest melting point

The same question, asked 4 times: May 2021 S1, 16 May 2023 S1, 11 May 2024 S2, 17 Apr 2026 S2. Every wording below, oldest first.

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Question 1
May 2021 S1
86 $Which among the following compounds has the highest melting point?$
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Question 2
16 May 2023 S1
77 $Which among the following has the highest melting point?$
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Question 3
11 May 2024 S2
97 $Which among the following phenols has highest melting point?$
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Question 4
17 Apr 2026 S2
38 $Which among the following has highest melting point ?$
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Question 1