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4221

What happens to the value of the equilibrium constant (Kc) for a reaction if the reaction is reversed?

  • A. It becomes zero
  • B. It becomes negative
  • C. It remains the same
  • D. It becomes the reciprocal of the original value
View Answer & Discuss (3) JAMB 2023
4222

What is the chemical structure of soap and detergent molecules?

  • A. Hydrophilic head and hydrophobic tail
  • B. Hydrophilic head and hydrophilic tail
  • C. Hydrophobic head and hydrophobic tail
  • D. Hydrophilic tail and hydrophobic head
View Answer & Discuss (1) JAMB 2023
4223

What is the solubility product constant (Ksp) used for?

  • A. To measure the total mass of a solute that can dissolve in a solvent
  • B. To determine the concentration of a solute in a saturated solution
  • C. To calculate the solubility of a solute in a given solvent
  • D. To compare the solubilities of different solutes in the same solvent
View Answer & Discuss JAMB 2023
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
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4224

Which trace gas in the atmosphere plays a significant role in the greenhouse effect?

  • A. Oxygen
  • B. Argon
  • C. Carbon dioxide
  • D. Nitrogen
View Answer & Discuss JAMB 2023
4225

Which of the following methods can be used to remove temporary hardness from water?

  • A. Boiling
  • B. Filtration
  • C. sedimentation
  • D. Chlorination
View Answer & Discuss (1) JAMB 2023
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free