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Chemistry 1992 WAEC Past Questions

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16
When iron rusts, it undergoes
  • A. deliquescence
  • B. chemical decomposition
  • C. hydrolysis
  • D. redox reaction
  • E. combustion
View Answer & Discuss (1) WAEC 1992
17
Consider the compounds represented by the following general formula: X2SO4 Y2(SO4)3, 24H2OX and Y could respectively be
  • A. K and AI
  • B. Fe and K
  • C. AI and Fe
  • D. AI and K
  • E. Cr and K
View Answer & Discuss WAEC 1992
18
Which of the following involves the decomposition enzymic action?
  • A. Esterification
  • B. Fermentation
  • C. Dehydration
  • D. Polymerization
  • E. Saponification
View Answer & Discuss WAEC 1992
WAEC offline past questions - with all answers and explanations in one app - Download for free
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19

The following salts are readily soluble in water except

  • A. Na2CO3
  • B. Pb(NO3)2
  • C. KCI
  • D. CuCO3
  • E. PbSO4
View Answer & Discuss (5) WAEC 1992
20
When sucrose is warmed with Fehling's solution
  • A. a silver mirror is produced
  • B. the solution turns milky
  • C. a brick-red precipitate is formed
  • D. there is no precipitate
  • E. a blue coloration is produced
View Answer & Discuss (5) WAEC 1992
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WAEC offline past questions - with all answers and explanations in one app - Download for free
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709