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Chemistry 1996 WAEC Past Questions

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11
An arrangement of two different metals in aqueous solutions of their salts to produce an electronic current is known as
  • A. electrochemical cell
  • B. activity series
  • C. thermocouple
  • D. voltameter
  • E. galvanometer
View Answer & Discuss (2) WAEC 1996
12
In which of the following compounds is the oxidation number of nitrogen equal to + 3?
  • A. NO 2
  • B. N 2O
  • C. NO
  • D. HNO2
  • E. HNO3
View Answer & Discuss WAEC 1996
13
Which of the following statements is not correct about electrolysis?
  • A. Reduction occurs at the anode
  • B. Anions migrate to the anode
  • C. Positive ions migrate to the cathode
  • D. Concentration affects the discharge of ions
  • E. Electrolytes conduct electric current
View Answer & Discuss (1) WAEC 1996
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14
Which of the following is not correct about a catalyst? It
  • A. remains unchanged chemically at the end of a reaction
  • B. helps to establish equilibrium faster reversible reaction
  • C. can start a chemical rection which will normally not take place
  • D. is usually specific in its action
  • E. alters the rate of chemical reaction
View Answer & Discuss (2) WAEC 1996
15
The rate of production of hydrogen gas from the reaction between zinc granules and hydrochloric acid can be increased by
  • A. cooling the reaction mixture
  • B. using zinc powder instead of zinc granules
  • C. using zinc rod instead of zinc granules
  • D. carrying out the reaction at a higher pressure
  • E. carrying out the reaction in a closed vessel
View Answer & Discuss WAEC 1996
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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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