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Chemistry Past Questions

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
4491

Which of the following statements about ammonium salt is correct? It

  • A. dissolves in water to form solution of pH > 1
  • B. dissolves in water to form solution of pH < 7
  • C. does not decompose on heating
  • D. is insoluble in water
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4492

Ethanedioic acid is an organic solid that can be purified by 

  • A. decantation
  • B. distillation
  • C. crystallization
  • D. filtration
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4493

Which of the following functional groups is present in alkanoic acid?

  • A. -COOH
  • B. -OH
  • C. -COOR
  • D. -CHO
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4494

In ethanol, the attractive forces between adjacent molecules are

  • A. covalent bonds only
  • B. hydrogen bonds only
  • C. hydrogen bonding and Van der Waal's forces
  • D. Van der Waal's forces only
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4495

At 25\(^0\)C, the saturated solution of a salt in water was found to contain 0.24g of the salt in 100cm\(^3\). What is the solubility of the salt in gdm\(^{-1}\)?

  • A. 0.024
  • B. 0.240
  • C. 2.40
  • D. 24.0
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