In the given reaction sequence, the percentage of oxygen in compound $(Q)$ is . . . . . . $\%$. (Nearest integer)

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In the given reaction sequence, the percentage of oxygen in compound $(Q)$ is . . . . . . $\%$. (Nearest integer)

Which of the following statements are $TRUE$ about Haloform reaction?
$A$. Sodium hypochlorite reacts with $KI$ to give $KOI$.
$B$. $KOI$ is a reducing agent.
$C$. $\alpha, \beta$-unsaturated methylketone will give iodoform reaction.
$D$. Isopropyl alcohol will not give iodoform test.
$E$. Methanoic acid will give positive iodoform test.
Choose the correct answer from the options given below:
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