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
  1. Home
  2. Classroom
  3. Chemistry
  4. WAEC 2022

Chemistry 2022 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
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
16

Determine the quantity of electricity used when a current of 0.20 amperes is passed through an electrolytic cell for 60 minutes.

  • A. 12C
  • B. 120C
  • C. 360C
  • D. 720C
View Answer & Discuss WAEC 2022
17

Oxochlorate(I) acid is used as a bleaching agent because it is

  • A. a weak acid
  • B. a reducing agent.
  • C. an oxidizing agent
  • D. a strong acid.
View Answer & Discuss WAEC 2022
18

The IUPAC name for CH\(_{3}\)CHCH\(_{3}\)CHCLCHCH\(_{3}\)CH\(_{2}\)CH\(_{3}\) is

  • A. 2, 4 - dimethyl - 3 - chlorohexane
  • B. 3, 5 - dimethyl - 4 - chlorohexane
  • C. 4 - chloro - 3, 5 - dirnethylhexane
  • D. 3 - chloro - 2, 4 - dimethylhexane
View Answer & Discuss (1) WAEC 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
19

A colourless gas with a pungent smell is evolved when dilute hydrochloric acid is added to a sample of a salt. The gas evolved could turn

  • A. acidified K\(_{2}\)Cr\(_{2}\)O\(_{7}\) solution colourless
  • B. acidified KMnO\(_{4}\) solution colourless
  • C. Fe(NO\(_{3}\))\(_{2}\) solution green
  • D. Pb(NO\(_{3}\))\(_{2}\) paper black
View Answer & Discuss WAEC 2022
20

If 5.0 g of marble reacts with 25.0 cm3 hydrochloric acid, which of the following combinations has the fastest reaction rate?

  • A. Marble chips and 2.0 mol dm\(^{-3}\) HCl\(_{(aq)}\)
  • B. Marble chips and 2.5 mol dm\(^{-3}\) HCl\(_{(aq)}\)
  • C. Powdered marble and 2.5 mol dm\(^{-3}\) HCl\(_{(aq)}\)
  • D. Powdered marble and 2.0 mol dm\(^{-3}\) HCl\(_{(aq)}\)
View Answer & Discuss (2) WAEC 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
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts