D-And F-Block Elements Ques 93

Question: Which compound does not dissolve in hot dilute $ HNO_3 $

[DCE 2002; NCERT 1977]

Options:

A) $ HgS $

B) $ CuS $

C) $ PbS $

D) $ CdS $

Show Answer

Answer:

Correct Answer: A

Solution:

HgS is soluble in aqua-regia and it is insoluble in hot dil. $ HNO_3 $ .



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