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SOF NSO · Chemical Reactions and Equations (Class 10) · Quiz

Chemical Reactions and Equations (Class 10) — quick quiz

5 real SOF NSO questions on Chemical Reactions and Equations (Class 10). Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 5

HARD

In the reaction: Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃, a yellow precipitate of lead iodide is formed. If the oxidation states of lead in Pb(NO₃)₂ and PbI₂ are both +2, and iodine changes from -1 to -1, what can be concluded about this reaction?