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Chemistry JAMB Past Questions

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876

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
877
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
878

Two cylinders A and B each contains 30 cm\(^3\) of oxygen and nitrogen respectively at the same temperature and pressure. If there are 5.0 moles of nitrogen, then the mass of oxygen is?

  • A. 3.2 g
  • B. 6.4 g
  • C. 80.0 g
  • D. 160.0 g
View Answer & Discuss (20) JAMB 1995
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879

A liquid begins to boil when?

  • A. its vapour pressure is equal to the vapour pressure of its solid at the given temperature
  • B. molecules start escaping from its surface
  • C. its vapour pressure equals the atmosphere pressure
  • D. its volume is sightly increased
View Answer & Discuss (2) JAMB 1995
880

A particle that contains 8 proton, 9 neutrons and 7 electrons could be written as?

  • A. O
  • B. O+
  • C. N
  • D. O-
View Answer & Discuss (32) 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