SO 2 and CO 2 both turn lime water (X) milky, SO 2 also turns K 2 Cr 2 O 7 /H + (Y) green…
Chemistry · JEE Main · NTA Exams — Principles Related To Practical Chemistry
SO2 and CO2 both turn lime water (X) milky, SO2 also turns K2Cr2O7/H+ (Y) green while O2 is soluble in pyrogallol (Z) turning it black. These gases are to be detected in order by using these reagents. The order is:
- (X), (Y), (Z)
- (Y), (X), (Z)
- (X), (Z), (Y)
- The correct order cannot be predicted.
Answer
(A) (X), (Y), (Z)
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