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Chemistry 1988 WAEC Past Questions

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21
Which of the following is not decomposed by heat?
  • A. CaCO3
  • B. CuCO3
  • C. ZnCO,sub>3
  • D. Na2CO3
  • E. MgCO3
View Answer & Discuss (2) WAEC 1988
22
Which of the following is not true of the rusting of iron?
  • A. Rusting is a reduction process
  • B. Rusting of iron takes place in the presence of oxygen and moisture
  • C. the rust formed is reddish brown
  • D. the major constituent of rust is hydrated iron (lll) oxide
  • E. rusting is similar to burning
View Answer & Discuss (3) WAEC 1988
23
Which of the following is not true of the rusting of iron?
  • A. Rusting is a reduction process
  • B. Rusting of iron takes place in the presence of oxygen and moisture
  • C. the rust formed is reddish brown
  • D. the major constituent of rust is hydrated iron (lll) oxide
  • E. rusting is similar to burning
View Answer & Discuss (2) WAEC 1988
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24
What volume of oxygen will be left unreacted when a mixture of 100cm3 of hydrogen and 200cm,sup>3,/sup> of oxygen are exploded in a eudiometer?
  • A. 300cm3
  • B. 200cm3
  • C. 150cm3
  • D. 100cm3
  • E. 50cm3
View Answer & Discuss (5) WAEC 1988
25
How many isomers can be obtained from C4H10?
  • A. o
  • B. 1
  • C. 2
  • D. 3
  • E. 4
View Answer & Discuss (5) WAEC 1988
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