A) \[HCl\]checks incomplete precipitation of higher group radicals
B) \[HCl\]checks precipitation of sulphur
C) both [a] and [b]
D) none of the above
Correct Answer: A
Solution :
Due to common ion effect, the ionization of \[{{H}_{2}}S\]is suppressed by\[HCl\]and only II groups basic radicals are precipitated. Higher groups are not precipitated.
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