A rock sample was added to cold dilute HNO3 The... - JAMB Chemistry 2002 Question
A rock sample was added to cold dilute HNO3. The gas evolved was passed into a solution of acidified K2Cr2O7 and the solution turned green. The sample contains
A
Cl-
B
NO3-
C
SO32-
D
SO42-
correct option: c
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