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Chemistry 2012 JAMB Past Questions

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41
A compound contains 40.0% C, 6.7% H 53.3% O. If the molecular mass of the compound is 180, its molecular formula is [C =12, H =1,O]
  • A. CH2O
  • B. C3H6O3
  • C. C6H6O3
  • D. C6H12O6
View Answer & Discuss (5) JAMB 2012
42
The saponification of an alkanoate to produce soap and alkanol involves
  • A. dehydration
  • B. esterification
  • C. hydrolysis
  • D. oxidation
View Answer & Discuss (1) JAMB 2012
43
2 - methyl propan -2- ol is an example of a
  • A. primary alkanol
  • B. secondary alkanol
  • C. tertiary alkanol
  • D. quartenary alkanol
View Answer & Discuss (2) JAMB 2012
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44

Ethanol reacts with concentrated tetraoxosulphate (VI) acid at a temperature above 170 oC to form

  • A. ethanone
  • B. ethene
  • C. ethyne
  • D. ethanal
View Answer & Discuss (2) JAMB 2012
45
An example of oxidation - reduction enzyme is
  • A. amylase
  • B. protease
  • C. lipase
  • D. dehydrogenase
View Answer & Discuss (1) JAMB 2012
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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
WAEC offline past questions - with all answers and explanations in one app - Download for free
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208