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Chemistry WAEC Past Questions

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1146
Consider the following reaction equation:
SO42-(aq) + 2H+(aq) + ye- \(\to\) SO42-(aq) + H2O(1).

The value of y in the equation is
  • A. 2
  • B. 3
  • C. 4
  • D. 6
View Answer & Discuss WAEC 2015
1147
The general gas equation was deprived from______?
  • A. Boyle's and Gay Lussac's laws
  • B. Boyle's and Graham's laws
  • C. Boyle's and Charles' laws
  • D. Dalton's atomic theory
View Answer & Discuss WAEC 2015
1148
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
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1149
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
1150

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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