AIPMT PRELIMS2011Chemistry-Redox Reactions
AIPMT PRELIMS 2011 Chemistry Reduction of Dichromate MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Acidified K₂Cr₂O₇ solution turns green when Na₂SO₃ is added to it. This is due to the formation of
A
CrSO₄
B
Cr₂(SO₄)₃
C
CrO₄²⁻
D
Cr₂(SO₃)₃
Correct Answer
Option B
Detailed Explanation
K₂Cr₂O₇ is reduced to Cr₂(SO₄)₃, which is green, in the presence of Na₂SO₃, a reducing agent.
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