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

Chemistry Past Questions

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

Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
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
4141

2H\(_2\) + O\(_2\) → 2H\(_2\)O

From the equation above, calculate the volume of unreacted oxygen gas if a mixture of 50cm\(^3\) of hydroden and 75cm\(^3\) of oxygen are involved

  • A. 85cm\(^3\)
  • B. 50cm\(^3\)
  • C. 125cm\(^3\)
  • D. 55cm\(^3\)
View Answer & Discuss (1) JAMB 2022
4142

In which of the following will hydrogen form ionic compound? 

  • A. HCL
  • B. NaH
  • C. NH\(_3\)
  • D. CH\(_4\)
View Answer & Discuss (9) JAMB 2022
4143

If the volume of a given mass of a gas at 0ºc is 29.5cm\(^3\). What will be the volume of the gas at 15ºc, given that the pressure remains constant. 

  • A. 31.6
  • B. 62.2
  • C. 32.7
  • D. 31.1
View Answer & Discuss (2) JAMB 2022
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
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
4144

The reactions below represent neutralization reaction, in which of them is the value of ΔH highest?

 

  • A. CH\(_3\)CH\(_2\)COOH + KOH → CH\(_3\)CH\(_2\)COOK + H\(_2\)O
  • B. NH\(_4\)OH + HCL → NH\(_4\) + H\(_2\)O
  • C. NaOH + HCL → NaCL + H\(_2\)O
  • D. CH\(_3\)COOH + NaOH → CH\(_3\)COONa + H\(_2\)O
View Answer & Discuss JAMB 2022
4145

The pollutant usually presents in a city which generates its electricity from coal?

  • A. fog
  • B. carbon(ii)oxide
  • C. smog
  • D. sulphur(iv)oxide
View Answer & Discuss (6) JAMB 2022
Start a Free Practice Test
 
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
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