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Chemistry Past Questions

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4231

When an acidic solution is diluted, what happens to its pH?

  • A. It depends on the specific acid
  • B. It decreases
  • C. It remains the same
  • D. It increases
View Answer & Discuss (6) JAMB 2023
4232

Which of the following factors does NOT affect the rate of a chemical reaction?

  • A. Concentration of reactants
  • B. Presence of a catalyst
  • C. Molecular weight of products
  • D. Temperature
View Answer & Discuss (1) JAMB 2023
4233

Which organic compound is responsible for the characteristic aroma of fruits?

  • A. Alkane
  • B. Alkyne
  • C. Ester
  • D. Amine
View Answer & Discuss (2) JAMB 2023
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4234

What is the molar mass of water (H2O)?

  • A. 18 g/mol
  • B. 22 g/mol
  • C. 16 g/mol
  • D. 12 g/mol
View Answer & Discuss (5) JAMB 2023
4235

What is the chemical formula of rust, which is formed on the surface of iron in the presence of oxygen and moisture?

  • A. Fe\(_3\)O\(_4\)
  • B. FeO
  • C. Fe(OH)3
  • D. Fe\(_2\)O\(_3\)
View Answer & Discuss (9) JAMB 2023
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