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Chemistry 1995 JAMB Past Questions

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1

Chromatography is used to separate components of mixtures which differ in their rates of?

  • A. diffusion
  • B. migration
  • C. reaction
  • D. sedimentaion
View Answer & Discuss (12) JAMB 1995
2
Which of the following is a example of a chemical change?
  • A. Dissoultion of salt in water
  • B. Rusting of iron
  • C. Melting of ice
  • D. Separating a mixture by distillation
View Answer & Discuss (2) JAMB 1995
3

The number of hydrogen ions in 4.9 g of tetraoxosulphate (IV) acid is?

(S = 32, O =16, H = 1, Avogadro Number = 6.02 x 10\(^{23}\) )

  • A. 3.01 x 1022
  • B. 6.02 x 1022
  • C. 3.01 x 1023
  • D. 6.01 x 1023
View Answer & Discuss (19) JAMB 1995
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
4

What volume of oxygen will remain after reacting 8cm\(^3\) of hydrogen with 20cm\(^3\) of oxygen?

  • A. 10 cm3
  • B. 12 cm3
  • C. 14 cm3
  • D. 16 cm3
View Answer & Discuss (32) JAMB 1995
5
A gas sample with an initial volume of 3.25 dm3 is heated and allowed to expand to 9.75 dm3 at constant pressure. What is the ratio of the final absolute temperature to the initial absolute temperature?
  • A. 3:1
  • B. 5:2
  • C. 5:4
  • D. 8:3
View Answer & Discuss (8) JAMB 1995
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