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

copper chloride,

C u C l_{2}

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mercuric chloride,

H g C l_{2}

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mercurous chloride, HgCl_2$

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zinc chloride,

Z n C l_{2}

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Solution

The correct option is B mercuric chloride, $H g C l_{2}$
$H g C l_{2}$ does not give positive chromyl chloride test, because only ionic compounds give chromyl chloride test and mercuric chloride is not an ionic compound. It is a covalent compound.

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