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Friday, 12 June 2026
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Chemistry Past Questions and Answers

Chemistry Questions

Question 2891:
The indicator used in neutralizing CH<sub style='font-size: smaller;'>3</sub>COOH and NaOH solution has pH range of
  • A 3-5
  • B 7-8
  • C 8-10<sup style='font-size: smaller;'>3</sup>
  • D 10-12
View Answer & Explanation
Question 2892:
When aqueous ammonia is added to one of the following solutions,a white precipitate which dissolved in excess ammonia is formed Identify the solution.
  • A ZnCl<sub style='font-size: smaller;'>2(aq)</sub>
  • B Pb(NO<sub style='font-size: smaller;'>3</sub>)<sub style='font-size: smaller;'>2(aq)</sub>
  • C CuSO<sub style='font-size: smaller;'>4(aq)</sub>
  • D FeSO<sub style='font-size: smaller;'>4(aq)</sub>
View Answer & Explanation
Question 2893:
Which of the following compounds absorbs moisture from the atmosphere and dissolves in it?
  • A FeCI<sub style='font-size: smaller;'>3</sub>
  • B MgSO<sub style='font-size: smaller;'>4</sub>.7H<sub style='font-size: smaller;'>2</sub>O
  • C Na<sub style='font-size: smaller;'>2</sub>SO <sub style='font-size: smaller;'>4</sub>
  • D KCI
View Answer & Explanation
Question 2894:
Consider the reaction represented by the equation: 2SO\(_{2(g)}\) + O\(_{2(g)}\) ⇌ 2SO\(_{3(g)}\); ∆H = - 197 kJmol\(^{-1}\). Which of the following conditions will not increase the yield of sulphur (VI) oxide?
  • A Increase in temperature
  • B Decrease in temperature
  • C Increase in pressure
  • D Addition of O<sub style='font-size: smaller;'>2</sub> into the mixture
View Answer & Explanation
Question 2895:
Electrolysis is applied in the following processes except
  • A Electroplating
  • B Extraction of aluminium
  • C Extraction of iron
  • D Purification of copper
View Answer & Explanation