AIPMT PRELIMS2012Chemistry-Inorganic Chemistry
AIPMT PRELIMS 2012 Chemistry Chromium Compounds MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Which of the statements is not true?
A
K₂Cr₂O₇ solution becomes yellow on increasing the pH beyond 7
B
On passing H₂S through acidified K₂Cr₂O₇ solution, a milky colour is observed
C
Na₂Cr₂O₇ is preferred over K₂Cr₂O₇ in volumetric analysis
D
K₂Cr₂O₇ solution in acidic medium is orange
Correct Answer
Option C
Detailed Explanation
Passing H₂S through acidified K₂Cr₂O₇ solution results in the reduction of Cr₂O₇²⁻ to Cr³⁺, which is green, not milky.
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