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3141
The vapour pressure of a liquid depends on:
I. Temperature II. rate of condensation III. Cohesive forces holding the particles together.
  • A. I
  • B. I and II
  • C. I and III
  • D. II and III
View Answer & Discuss (7) WAEC 2015
3142
Which of the following gases will diffuse most rapidly?

[H = 1.00, C = 12.0, O = 16.0, S = 32.0, Cl = 35.5]
  • A. Cl2
  • B. SO2
  • C. CH4
  • D. C2H6
View Answer & Discuss (4) WAEC 2015
3143

When a reaction is endothermic,

  • A. Enthalpy change, \(\Delta\)H is negative
  • B. Heat content of a product is less than the heat content of a reactant
  • C. Heat content of reactants is less than the heat content of product
  • D. The reaction is non-spontaneous
View Answer & Discuss (4) WAEC 2015
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3144

Which of the following statements about intermolecular distances and cohesive forces between gas is correct? They are

  • A. Both large
  • B. Both negligible
  • C. Constant and negligible
  • D. Large and negligible
View Answer & Discuss (8) WAEC 2015
3145

The following diagram illustrates the rate curve that was obtained when Mg reacted with excess dilute HCl.

The diagram became horizontal at X because

  • A. The reaction was slowed down
  • B. All the dilute HCl has reacted
  • C. All the Mg has reacted
  • D. Hydrogen gas is produced at a steady rate
View Answer & Discuss (13) WAEC 2015
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts