Which of the following will not give a positive chromyl chloride test?

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Anilinium chloride $C_{6} H_{5} {NH}_{3} Cl$

Copper chloride ${CuCl}_{2}$

Zinc chloride, ${ZnCl}_{2}$

Mercuric chloride, ${HgCl}_{2}$

answer is B.

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Detailed Solution

Because only ionic chemicals get a positive result on the chromyl chloride test and mercuric chloride is not and ${HgCl}_{2}$ does not ionic compound. This substance is covalent.

${HgCl}_{2}$ is significantly covalent to release. sufficient ${Cl}^{-}$ for the +ve chromyl chloride test.

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