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4256

If gas A has a molar mass of 32 g/mol and gas B has a molar mass of 64 g/mol, what is the ratio of their diffusion rates?

  • A. 2:1
  • B. 1:2
  • C. 1:1
  • D. 1:4
View Answer & Discuss (4) JAMB 2023
4257

The contact process is used for the industrial production of

  • A. sulfuric acid (H2SO4)
  • B. Hydrochloric acid (HCl)
  • C. Sodium hydroxide (NaOH)
  • D. Calcium oxide (CaO)
View Answer & Discuss JAMB 2023
4258

Which of the following is a unique property of water compared to other liquids?

  • A. It is a poor solvent
  • B. It does not evaporate
  • C. It expands when freezing
  • D. It has a low heat capacity
View Answer & Discuss (1) JAMB 2023
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
4259

Sodium reacts vigorously with water to produce

  • A. Sodium chloride (NaCl) and oxygen gas (O2)
  • B. Sodium nitrate (NaNO3) and water (H2O)
  • C. Sodium hydroxide (NaOH) and hydrogen gas (H2)
  • D. Sodium oxide (Na2O) and hydrogen gas (H2)
View Answer & Discuss JAMB 2023
4260

At room temperature and standard pressure, chlorine gas is in which state of matter?

  • A. Plasma
  • B. Solid
  • C. Liquid
  • D. Gas
View Answer & Discuss (2) JAMB 2023
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