A red solid is insoluble in water. However, it becomes soluble, if some KI is added to…
Chemistry · NEET · NTA Exams — d- and f- Block Elements
A red solid is insoluble in water. However, it becomes soluble, if some KI is added to water. Heating the red solid in a test tube, results in liberation of some violet coloured fumes and droplets of a metal appear on cooler part of the test tube.
The red solid is:
- Pb3O4
- HgI2
- HgO
- (NH4)2Cr2O7
Answer
(B) HgI 2
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