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Question

Which of the following gives white precipitate when HCl is added to its aqueous solution?

A
Hg+
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B
Mg2+
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C
Zn2+
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D
Cd2+
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Solution

The correct option is A Hg+
2Hg+2HClHg2Cl2white ppt.+H2

Hg+ ion gives white precipitate when HCl is added to its aqueous solution.

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