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

Chemistry 2021 WAEC Past Questions

Clear Selections
Change Subject Post a Question Check Syllabus Study My Bookmarks Past Questions Videos Watch Video Lessons Download App

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
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208

Study the graphs below and use them to answer the question below

Open photo

11

Which of the graphs illustrates the variation of the solubility of a salt in water (y-axis), with an increase in temperature (x-axis) if the dissolution process is exothermic?

  • A. I
  • B. II
  • C. III
  • D. IV
View Answer & Discuss WAEC 2021
12

The formation of ethene from dehydration of ethanol can be described as-------

  • A. an addition reaction
  • B. an elimination reaction
  • C. an oxidation reaction
  • D. a substitution reaction
View Answer & Discuss (1) WAEC 2021
13

Which of the following gasses is highly soluble in water at room temperature

  • A. ammonia
  • B. carbon (IV) oxide
  • C. chlorine
  • D. nitrogen
View Answer & Discuss (2) WAEC 2021
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
14

A molecular of phosphorus is

  • A. diatomic
  • B. triatomic
  • C. tetraatomic
  • D. monoatomic
View Answer & Discuss WAEC 2021
15

The most common method of preparing insoluble salts is by

  • A. filtration
  • B. decomposition
  • C. neutralization
  • D. double decomposition
View Answer & Discuss (1) WAEC 2021
Start a Free Practice Test
 
WAEC offline past questions - with all answers and explanations in one app - Download for free
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
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208