Which of ethanal, propanal, propanone and butanone does NOT give the haloform reaction

The same question, asked 2 times: 3 May 2023 S1, 26 Apr 2025 S1. Every wording below, oldest first.

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Question 1
3 May 2023 S1
81 $Which of the following compounds does not undergo haloform reaction?$
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Question 2
26 Apr 2025 S1
60 $Which of the following does NOT exhibit haloform reaction?$
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