Q1. In the reaction \( \ce{2KI + Cl2 -> 2KCl + I2} \), what is the oxidizing agent?A. \( \ce{KI} \)B. \( \ce{I2} \)C. \( \ce{KCl} \)D. \( \ce{Cl2} \)
Q3. Which of the following is a displacement reaction involving redox?A. \( \ce{Fe + 2AgNO3 -> Fe(NO3)2 + 2Ag} \)B. \( \ce{2NaCl + F2 -> 2NaF + Cl2} \)C. \( \ce{CaO + SiO2 -> CaSiO3} \)D. \( \ce{NH3 + H2O -> NH4OH} \)
Q6. Which compound contains an element with a fractional oxidation number?A. \( \ce{FeSO4} \)B. \( \ce{Fe2O3} \)C. \( \ce{Fe3O4} \)D. \( \ce{FeCl3} \)
Q7. In the reaction \( \ce{2FeCl2 + Cl2 -> 2FeCl3} \), which element is oxidized?A. ChlorineB. HydrogenC. IronD. None of these
Q8. In the reaction \( \ce{2KBr + Cl2 -> 2KCl + Br2} \), what is the oxidizing agent?A. \( \ce{KBr} \)B. \( \ce{Br2} \)C. \( \ce{Cl2} \)D. \( \ce{KCl} \)
Q9. In \( \ce{2Na2S + 3O2 -> 2Na2O + 2SO2} \), what is the total number of electrons transferred per mole of \( \ce{Na2S} \)?A. 2B. 4C. 8D. 6
Q10. In \( \ce{2Na2S2O3 + O2 -> 2Na2SO4} \), what is the total number of electrons transferred per mole of \( \ce{Na2S2O3} \)?A. 4B. 6C. 2D. 8