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(D) Pure chloroform $(CHCl_3)$ is a covalent compound and does not ionize to release $Cl^-$ ions; therefore,it does not form a precipitate with $AgNO_

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$Ph-CO-CH_2-CO-Ph$ with $NaOH + I_2$ gives a yellow precipitate.

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(D) Pure chloroform $(CHCl_3)$ is a covalent compound and does not ionize to release $Cl^-$ ions; therefore,it does not form a precipitate with $AgNO_3$. Chloroform is primarily used as an anesthetic,while iodoform $(CHI_3)$ is used as an antiseptic. The compound $Ph-CO-CH_2-CO-Ph$ contains a reactive methylene group flanked by two carbonyl groups,which undergoes the iodoform reaction with $NaOH + I_2$ to produce a yellow precipitate of $CHI_3$.

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