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  4. Sulphide, which is insoluble in dilute textHN textO3 :-

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Q. Sulphide, which is insoluble in dilute $\text{HN}\text{O}_{3}$ :-

NTA AbhyasNTA Abhyas 2020The p-Block Elements - Part2

Solution:

$\text{HgS}$ is insoluble in $HNO_{3}$ , it is soluble only in aqua regia.