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MCQ practice · SSC Chemistry Board questions · Chapter 7

SSC Chemistry Chapter 7.

Chemical Reactions

55 questions · Board questions

  1. What is ΔH (kJ/mole) for the reaction N₂(g) + O₂(g) → 2NO(g)?Jashore Board 2025
  2. Which is used as the catalyst in making ammonia by the Haber process?Rajshahi Board 2023
  3. Which is oxidized in the reaction Ca + Cl₂ → CaCl₂?Cumilla Board 2022
  4. In Mg + ZnSO₄ → MgSO₄ + Zn, which is oxidized?Jashore Board 2023
  5. In Sn⁴⁺ + Fe²⁺ → Sn²⁺ + Fe³⁺, which is reduced?Barishal Board 2023 · Barishal Board 2025
  6. SnCl₂ + 2FeCl₃ → 2FeCl₂ + SnCl₄. In the reaction in the stem-Chattogram Board 2025
  7. Which of the following is an oxidizing agent?Sylhet Board 2024
  8. Which is a reducing agent?Dhaka Board 2022
  9. Which ion can be oxidized?Dinajpur Board 2023
  10. Which is a reducing agent?Jashore Board 2023
  11. Which is a reducing agent?Chattogram Board 2024
  12. Which acts only as an oxidizing agent?Barishal Board 2023
  13. Which of the following acts as both an oxidizing and a reducing agent?Cumilla Board 2023
  14. What is the oxidation number of hydrogen in CaH₂?Cumilla Board 2023
  15. What is the oxidation number of hydrogen in LiAlH₄?Chattogram Board 2023
  16. What is the oxidation number of oxygen in a peroxide compound?Chattogram Board 2024
  17. What is the oxidation number of oxygen in NaO₂?Sylhet Board 2023
  18. What is the oxidation number of oxygen in KO₂?Rajshahi Board 2022
  19. What is the oxidation number of Mn in KMnO₄?Barishal Board 2023 · Rajshahi Board 2023
  20. What is the oxidation number of the central element in sulphuric acid?Dinajpur Board 2025
  21. What is the oxidation number of sulphur in copper sulphate?Jashore Board 2022
  22. What is the oxidation number of the central atom in K₂Cr₂O₇?Chattogram Board 2025
  23. What is the oxidation value of sulphur in Na₂S₂O₃?Chattogram Board 2022
  24. What is the oxidation value of sulphur in sodium thiosulphate?Dhaka Board 2024
  25. What is the oxidation number of S in Na₂S₄O₆?Barishal Board 2022
  26. What is the oxidation number of Cl in HClO₄?Barishal Board 2025 · Dinajpur Board 2023
  27. What is the oxidation number of sulphur in H₂S₂O₇?Dhaka Board 2022
  28. In which of the following compounds is the oxidation value of S +4?Rajshahi Board 2025
  29. What is the oxidation number of carbon in potassium carbonate?Jashore Board 2023
  30. What is the oxidation number of N in the NO₃⁻ ion?Sylhet Board 2024
  31. In the reaction FeCl₂ + Cl₂ = 2FeCl₃-Chattogram Board 2022
  32. Cu₂Cl₂ + Cl₂ → 2CuCl₂; what type of reaction is this?Dhaka Board 2024
  33. The reaction Zn + H₂SO₄ → ZnSO₄ + H₂ is-Sylhet Board 2022
  34. In which reaction does electron transfer occur?Rajshahi Board 2022
  35. In which of the following does oxidation-reduction occur?Chattogram Board 2022 · Jashore Board 2024
  36. The reaction 2Mg + O₂ = 2MgO is-Cumilla Board 2023
  37. The reaction 2Mg + O₂ = 2MgO is-Sylhet Board 2024
  38. The reaction mentioned is-Dhaka Board 2025
  39. The reaction in the stem is-Dinajpur Board 2022
  40. How many spectator ions are there in the reaction 2FeCl₂ + Cl₂ → 2FeCl₃?Sylhet Board 2023
  41. If xH₂ + yO₂ = zH₂O is balanced, what is x : y : z?Rajshahi Board 2022
  42. Which is a non-redox reaction?Dinajpur Board 2023
  43. Which is a non-redox reaction?Cumilla Board 2024
  44. Which are the spectator ions in HNO₃(aq) + KOH(aq) → KNO₃(aq) + H₂O?Barishal Board 2025 · Jashore Board 2023
  45. For AgNO₃(aq) + NaCl(aq) → NaNO₃ + AgCl, which is correct about the spectator ions?Dhaka Board 2023
  46. Fe₂(SO₄)₃(aq) + 6NaOH(aq) → 2Fe(OH)₃ + 3Na₂SO₄; what type of reaction is this?Sylhet Board 2025
  47. What class of reaction is SiCl₄ + 4H₂O → Si(OH)₄ + 4HCl?Chattogram Board 2023
  48. Which is both a hydrolysis and a precipitation reaction?Dinajpur Board 2025
  49. Which is the formula of rust?Dhaka Board 2022
  50. In the reaction HCl(aq) + Al(OH)₃ → AlCl₃ + H₂O-Cumilla Board 2022
  51. N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + 92 kJ; what happens if heat is applied to this reaction?Dinajpur Board 2024
  52. N₂(g) + O₂(g) ⇌ 2NO(g); ΔH = +180 kJ. Which have an effect on this reaction?Chattogram Board 2023
  53. Pressure has no effect on which reaction?Jashore Board 2024
  54. Which has an effect of pressure?Dhaka Board 2023
  55. 2NO(g) + O₂(g) ⇌ 2NO₂(g); for this reaction-Cumilla Board 2025