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Sulphuric Acid

The sulphide ...

Question

The sulphide not soluble in hot dilute nitric acid is________.

A

C u S

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B

Z n S

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C

C d S

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D

H g S

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Solution

The correct option is C $H g S$
Option (D) is correct.
The sulphide not soluble in hot dilute nitric acid is $H g S$ .
$H g S$ is insoluble in $c o n c . H N O_{3}$ . It is soluble in aquaregia.

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