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Chemistry 2023 JAMB Past Questions

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NECO offline past questions - All questions, answers & explanations in one app 25712
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11

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
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12

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
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13

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

  • A. Oxygen
  • B. Argon
  • C. Carbon dioxide
  • D. Nitrogen
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NECO offline past questions - All questions, answers & explanations in one app 25712
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14

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

  • A. Boiling
  • B. Filtration
  • C. sedimentation
  • D. Chlorination
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15

What is Faraday's constant?

  • A. 6.022 x 10\(^{23}\) mol\(^{-1}\)
  • B. 3.00 x 10\(^8\) m/s
  • C. 9.81 m/s\(^2\)
  • D. 96,485 C/mol
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