2020 WAEC (WASSCE) Chemistry Past Questions
Browse the 2020 WAEC (WASSCE) Chemistry past questions with answers and step-by-step explanations. Chemistry covers physical, inorganic and organic chemistry across three sub-papers. The highest-yield revision is past questions: examiners reuse the same reaction patterns and the same common compounds year after year. Use the year archive below to time yourself the way the actual exam does — most candidates need to work questions across multiple years before the patterns become obvious.
Sample WAEC (WASSCE) Chemistry questions
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- Q12025MEDIUMEnglish
From the words lettered A to E, choose the word that best completes each of the following sentences. The earthquake that struck Mexico........the city
- A.confused
- B.devastated
- C.demarcated
- D.troubled✓ Correct
- E.demolished
- Q22025MEDIUMEnglish
After the sentence below, a list of possible interpretations is given. Choose the interpretation that you consider most appropriate for the sentence. While paying a visit to his uncle, Ayo intends to kill two birds with one stone. This means that Ayo
- A.promises to bring two birds home
- B.takes part in a double deal✓ Correct
- C.hopes to achieve two aims with one action
- D.intends to do two things at the same time
- Q32025MEDIUMChemistry
An atom of an element in the ground state contains 8 valence electrons. The element is considered as a
- A.metal✓ Correct
- B.semi-metal
- C.noble gas
- D.halogen
- Q42016MEDIUMGeography
The contour interval on the map is
- A.50 metres
- B.100 metres✓ Correct
- C.150 metres
- D.200 metres
- Q52017MEDIUMAgricultural Science
Subsidies are given to farmers in the form of
- A.A. reduced prices of inputs
- B.B. provision of social infrastructure
- C.C. high tariff on imported inputs✓ Correct
- D.D. short term loans
- Q62025MEDIUMEnglish
From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences: .................In their youth is a source of pleasurable reminiscence for elderly persons
- A.to be travelling
- B.to travel
- C.by travelling✓ Correct
- D.to have travelled
- Q72021MEDIUMCivic Education
Constitutional democracy is also known as
- A.A. limited government
- B.B. Communalism
- C.C. communism✓ Correct
- D.D. absolute government
- Q82011MEDIUMChemistry
Which of the following statements about a molar solution is correct? it
- A.is a supersaturated solution
- B.cannot dissolve more of the solute at that temperature✓ Correct
- C.contains any amount of solute in a given volume of solution
- D.contains one mole of the solute in 1 dm3 of solution
- Q92017MEDIUMLiterature in English
The speaker is_____________
- A.Duke
- B.Othello✓ Correct
- C.Brabantio
- D.Cassio
- Q102017MEDIUMGovernment
(a) What is a crown colony? (b) Highlight four functions of the Secretary of State for the colony under the British colonial system.
Other WAEC (WASSCE) Chemistry years
Working multiple years back-to-back is the fastest way to recognise repeating patterns.