Chemistry (2019/2020) WAEC Expo Questions And Answers Theory & OBJ

WAEC Expo On Chemistry(2019/2020) WAEC Questions And Answers Theory & OBJ

This article will show you the direct Chemistry expo you need to pass WAEC Chemistry in 2019. I am going to show you the most compulsory questions and answers you need.

On this page, you will get waec Chemistry 2019, Chemistry waec questions and answers, 2019 waec question on Chemistry, waec gce 2019 Chemistry questions answers, waec Chemistry 2019 theory questions and answers, waec Chemistry terminologies OBJ questions and answers, waec Chemistry theory and OBJ questions and answers e.t.c. So, keep reading.


A lot of  candidates have been wondering and asking questions like, “how can I get WAEC expo in 2019 and receive Chemistry questions and answers before my exam?. I am going to show you the truth behind the whole WAEC expo story in this article. This are some of the major focus,take  a look on

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1 WAEC Expo On Chemistry 2019/2020 – How To Get OBJ & Theory Questions And Answers
2 Topics Where WAEC Chemistry Questions 2019 Will Come Out From
3 Likely Questions In WAEC Chemistry 2019/2020

WAEC Expo On Chemistry 2019/2020 – How To Get OBJ & Theory Questions And Answers


  1. The first thing you need to know is that you can totally pass WAEC examination without expo/runs. What you need is to work hard and study the right way. In fact, WAEC is not hard at all.
  2. Here, we do NOT advertise WAEC expo to candidates and we will NEVER ask you to pay for WAEC expo for any reason.
  3. I REPEAT, we do not engage in examination malpractice here and we will never ask you for money to get WAEC questions and answers in 2019.
  4. Most people that promise to give you WAEC questions and answers for a fee are scammers. They are after your money.
  5. If you get WAEC expo to pass in 2019, you will NEVER find expo for JAMB and Post UTME.

NOTE: This are the prospectus that will guarantee success in 2019 WAEC  here on this page, so keep reading.

Topics Where WAEC Chemistry Questions 2019 Will Come Out From


  1. Physical Quantities
  2. Separation Techniques
  3. Atoms And Molecules
  4. Physical and chemical changes
  5. Electronic configuration
  6. Periodic chemistry
  7. Chemical bonding
  8. Shapes of molecules
  9. Stoichiometry
  10. Gas laws
  11. Energy changes
  12. Acids, bases and salts
  13. Solubility
  14. Chemical kinematics and equilibrium
  15. REDOX reactions
  16. Electrolysis
  17. Radioactivity
  18. Organic chemistry
  19. Qualitative analysis (metals and non-metals)


Likely Questions In WAEC Chemistry 2019/2020

1. Equilibrium is said to be attained in reversible reaction when

  • A. all the reactants have been used up
  • B. all the products have been formed
  • C. there is no further change in temperature
  • D. the rates of the forward and backward reactions are equal
  • E. the rate of formation of the products decreases with time


2. An acid present in proteins is

  • A. lactic acid
  • B. amino acid
  • C. propanoic acid
  • D. palmitic acid
  • E. stearic acid


3. The reaction represented by the equation NaOH(aq) + HCI(aq) → NaCI(aq) + H2O(/)
w seconds

4. Which of the following compound is aromatic?

  • Benzene
  • B. Cyclobutane
  • C. Cyclopentane
  • D. Hexane
  • E. Ethene


5. Which of the following does not affect the rate of a chemical reaction?

  • A. Addition or presence of a catalyst
  • B. Size of the reacting particles
  • C. The enthalpy change for the reaction
  • D. Concentration of the reactants
  • E. Temperature at which the reaction is carried out


6. Given that 32.0g sulphur contains 6.02 x 10 23 sulphur atoms how many atoms are there in 2.70g of aluminium? {Al = 27, S =32}

  • . 6.02 x 10 23
  • B. 3.01 x 1022
  • C. 6.02 x 1022
  • D. 5. 08 x 1022
  • E. 3.01 x 1022


7. A salt which loses mass when exposed to air is

  • A. hygroscopic
  • B. deliquescent
  • C. efflorescent
  • D. fluorescent
  • E. effervescent


8. Which of the following is used as an anaesthetic?

  • A. CHI3
  • B. CHCI3
  • C. CH3OH
  • D. C2H5OH
  • E. CHBr3


9. Which of the following is a neutral oxide?

  • A. Nitrogen (IV0 oxide
  • B. Carbon (IV) oxide
  • C. Sulphur (IV) oxide
  • D. Phosphorus (IV) oxide
  • E. Nitrogen oxide


10. The following are uses of radioactive isotopes except for

  • A. sterilization of medical equipment
  • B. tracing reaction paths
  • C. dating elements
  • D. radiography
  • E. determining equilibrium positions


11. The main characteristic feature of transition metals is that they

  • A. have the same atomic size
  • B. are reducing agents
  • C. from ions easily
  • D. have variable oxidation states
  • E. are highly electropositive


12. Bubbling of carbon (IV)oxide into calcium hydroxide solution results in the formation of

  • A. CaCO3
  • B. CuCO3
  • C. ZnCO,sub>3
  • D. Na2CO3
  • E. MgCO3

13. Which of the following metals cannot extracted from its ore by using carbon (ll) oxide as the reducing agent?

  • A. Cu
  • B. Zn
  • C. Al
  • D. Pb
  • E. Fe

14. Aqueous sodium trioxocarbonate (IV) solution is alkaline because

  • A. acid from which it is formed is strong
  • B. sodium is an alkali metal
  • C. sodium trioxocarbonate (IV) is decomposed by water
  • D. sodium trioxocarbonate (lV) is stable to heat
  • E. sodium triocarbonate (IV) is hydrolysed in water

15. During the electrolysis of dilute tetraoxosulphate (VI) acid solution 0.05 mole of electrons were passed what volume of gas was produced at the anode? (Gaseous molar volume = 22. 4dm3 at s.t.p)

  • A. 0.224 dm3
  • B. 0.280 dm3
  • C. 0.560 dm3
  • D. 2.24 dm3
  • E. 22.4 dm3

If you can study your textbooks(Essential textbooks) very well, use the WAEC syllabus and cover all topics you need to, you will definitely have outstanding result in 2019 WAEC  ONCE AND FOR ALL.

WAEC Chemistry Examination Scheme
There shall be three papers – Papers 1, 2 and 3 all of which must be taken. Paper 1 and 2 shall be a composite paper to be taken at one sitting.

PAPER 1: Will consist of fifty multiple choice objective questions drawn from Section A of the syllabus (ie the portion of the syllabus which is common to all candidates).
Candidates will be required to answer all the questions within 1 hour for 50 marks.

PAPER 2: Will be a 2-hour essay paper covering the entire syllabus and carrying 100 marks. The paper will be in two sections; Sections A and B.

Section A: Will consist of ten short structured questions drawn from the common portion of the syllabus. (i.e. Section A of the syllabus).
Candidates will be required to answer all the questions for 25 marks.

Section B: Will consist of two questions from the common portion of the syllabus (i.e. Section A of the syllabus) and two other questions from the section of the syllabus which is perculiar to the country of the candidate (i.e. either Section B or C of the syllabus). Candidates will be required to answer any three of the questions. Each question shall carry 25 marks.

PAPER 3: This shall be a 2-hour practical test for school candidates or 1 hour 30 minutes alternative to practical work test for private candidates. Each version of the paper shall contain three compulsory questions and carry 50 marks.

The questions shall be on the following aspects of the syllabus:
– One question on quantitative analysis;
– One question on qualitative analysis;
– The third question shall test candidates’ familiarity with the practical activities suggested in their teaching syllabuses.

WAEC 2019 Examination Instructions


  1. Do not open your question paper until you are told to do so
  2. USE HB pencil throughout in the OBJ Section
  3. You are free to use Biro in the theory part
  4. You are allowed to use calculator to solve
  5. Make sure that you fill your name, Subject, paper, paper code and other examination details where necessary.
  6. Ensure that the texts in your question papers are boldly printed
  7. Behave yourself.
  8. You must not be caught with any form of expo


WAEC 2019 Subjects To Pass


  1. Mathematics
  2. Chemistry Language
  3. Agricultural science
  4. Animal Husbandry
  5. Biology
  6. Book keeping
  7. Chemistry
  8. Christian Religious Studies (CRS)
  9. Civic Education
  10. Commerce
  11. Computer Studies
  12. Data Processing
  13. Economics
  14. Financial Accounting
  15. Fisheries
  16. Further Chemistry
  17. GEography
  18. Government
  19. History
  20. Islamic Religious Studies (IRS)
  21. Literature in Chemistry
  22. Marketing
  23. Physics
  24. Yoruba


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