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NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS
1
Medium
1 of 1
Analyzing
+4 | -1
The incorrect statement(s) among (1)-(3) is (are)
1) W(VI) is more stable than Cr(VI).
2) In the presence of HCl, permanganate titrations provide satisfactory results.
3) Some lanthanoid oxides can be used as phosphors.
1) W(VI) is more stable than Cr(VI).
2) In the presence of HCl, permanganate titrations provide satisfactory results.
3) Some lanthanoid oxides can be used as phosphors.
View answer and explanation
Correct option: B
2 only
Option B (2 only) is the correct answer because permanganate titrations in the presence of HCl are not satisfactory due to the oxidation of HCl to chlorine.
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