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 $ .