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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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6

What is the effect of using vanadium (V) oxide as catalyst in the reaction represented by the following equation? 2SO2 + O2 ⇌ 2SO3; ∆H = - xKJmol-1

  • A. Decreases the value of ∆H
  • B. Increases the collision rate of reactant particles
  • C. Shifts equilibrium position to the right
  • D. Reduces the time for attainment of equilibrium
View Answer & Discuss (7) WAEC 2000
7

Which of the following reactions is sulphur (IV) oxidizing agent?

  • A. 2HNO 3(aq) + SO2(g) → H2SO4(aq) + 2NO2(g)
  • B. 2KMnO 4(aq) + 5SO2(g) + 2H2O → K2SO4(aq) +MnSO4(aq) 2H2SO4(aq)
  • C. FeCI3(aq) + SO2(g) + 2H2O(l) → FeCI 2(g)+ 2HCI(g) + H2SO4(aq)
  • D. 2H2S(g) + SO2(g) →2H2O(l) + 3S(s)
View Answer & Discuss (6) WAEC 2005
8

SO\(_2\) + O\(_2\) → 2SO\(_3\)

In the reaction above, the most suitable catalyst is?

  • A. chromium(vi)oxide
  • B. iron(iii)oxide
  • C. copper(i)oxide
  • D. vanadium(v)oxide
View Answer & Discuss (10) JAMB 2022
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9

The sulphide that is commonly used in coating electric fluorescent tubes is?

  • A. iron(ii)Sulphide
  • B. tin(ii)sulphide
  • C. Zinc Sulphide
  • D. lead(iv) Sulphide
View Answer & Discuss (9) JAMB 2022
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