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

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A rock sample was added to cold dilute HNO3. The gas evolved was passed into a solution ...

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Atomic Structure And Bonding
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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

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Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE

A Cl^-
B NO₃^-
C SO₃^2-
D SO₄^2-

Correct Answer: Option C

Explanation:

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A rock sample was added to cold dilute HNO3. The gas evolved was passed into a solution ...

Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE

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