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Chemistry 1994 JAMB Past Questions

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41
The set-up above would be useful for determining the amount of
  • A. oxygen in air
  • B. water vapour in air
  • C. CO2 in air
  • D. arygen in air
View Answer & Discuss (4) JAMB 1994
42
The ∆H for the reaction represented by the energy profile above is
  • A. -100 kJ mol--1
  • B. + 100 kJ mol-1
  • C. +50 kJ mol-1
  • D. -50 kJ mol-1
View Answer & Discuss (20) JAMB 1994
43
In the diagram above the activation energy is represented by
  • A. y - x
  • B. x
  • C. x - z
  • D. y
View Answer & Discuss (22) JAMB 1994
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44

2HCL(ag) + CaCO3(ag) → CaCL2(ag) + H2O(1) + CO from the reaction above, which of the following curves represents the consumption of calcium trioxocarbonate (IV) as dilute HCL is added to it?

  • A. L
  • B. M
  • C. N
  • D. P
View Answer & Discuss (12) JAMB 1994
45

In the diagram above, R is a mixture of?

  • A. potassium tetraxochlorate (VII) and concentrated H2SO4
  • B. potassium trioxochlorate (V) and concentrated H2SO4
  • C. potassium tetratoxomanganate (VII) and concentrated HCI
  • D. manganese (IV) oxide and concentrated HCI
View Answer & Discuss (32) JAMB 1994
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