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Chemistry 1986 JAMB Past Questions

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6
20 cm3 of 1.0 molar NH4OH solution when neutralized with 20.05cm3 of 0.1 molar HCl liberated -102 joules of heat. Calculate the heat of neutralization of NH4OH?
  • A. -51.O KJ mol-
  • B. +57.3 KJ mol-
  • C. +57.O KJ mol-
  • D. +51.0 KJ mol-
View Answer & Discuss (7) JAMB 1986
7

What is the consequences of increasing pressure on the equilibrium reaction ZnO(s) + H2(g) Zn(s) + H2O(I)?

  • A. The equilibrium is driven to the left
  • B. The equilibrium is driven to the right
  • C. There is no effect
  • D. More ZnO is produced
View Answer & Discuss (15) JAMB 1986
8
The approximate volume of air containing 10cm3 of oxygen is?
  • A. 20 cm3
  • B. 25 cm3
  • C. 50 cm3
  • D. 100 cm3
View Answer & Discuss (21) JAMB 1986
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9
The reaction Mg + H2O → MgO + H2 takes place only in the presence of?
  • A. excess Mg ribbon
  • B. excess cold water
  • C. very hot water
  • D. steam
View Answer & Discuss (13) JAMB 1986
10

When steam is passed through red hot carbon, which of the following are produced?

  • A. Hydrogen oxygen and carbon (IV) oxide
  • B. Hydrogen and carbon (IV) oxide
  • C. Hydrogen and carbon (II) oxide
  • D. Hydrogen and trioxocarbonate (IV) acid
View Answer & Discuss (9) JAMB 1986
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