WAEC Past Questions And Answers Pdf in PDF Format


It is important that you prepare very well for the exams, because as much as we know, before going for any examination, maximum preparation is required to get the necessary success. therefore, you need to have a copy of WAEC Past Questions And Answers Pdf in PDF Format to use and prepare adequately for the exams. We will explain what it is all about, how it is patterned to suit your demand and the easiest way to download or get it. Pounds to Naira

What is WAEC Past Questions And Answers Pdf in PDF Format

Let us begin by explaining what this past question and answer is all about. WAEC Past Questions And Answers Pdf in PDF Format is the compilation of all the Waec questions in different subjects and years of occurrence that have been given to students to answer as a means to qualify them for the issuance of school certificate and the past question and answer is presented in pdf format.

We have made it very simple, portable, and affordable such that every student can get it or download it as long as they have access to the smartphone. WAEC Past Questions And Answer in PDF Format


All those who have gotten our WAEC Past Questions And Answers Pdf in PDF Format have been giving testimonies of how it helped them. We are very sure it is going to help you as well. When you get this past question it will definitely help you to score higher than your competitors and give you an edge over them. Pounds to Naira

With the proper use of our original WAEC Past Questions And Answers Pdf in PDF Format, you will definitely pass the Waec examination and come out with flying colors smiling so you do not have to worry anymore. This past question comes to you through your email address or Whatsapp once you make payments to purchase it. The downloadable format is going to be in softcopy, you can either choose to download it and read with your android phone or laptop and at your own convenience – wherever and whenever. Jamb Result

How is WAEC Past Questions And Answers Pdf in PDF Format Patterned

Normally, the WAEC Past Questions And Answers Pdf in PDF Format is in three patterns. The objective, theory, and practical aspects for some subjects. We have made it very easy for you. we bring all the questions for many years and put them together but we indicate the specific years of their occurrence. We provide the correct answers in order to save your time. All you need to do is to devote quality time to study the WAEC Past Questions And Answers Pdf in PDF Format and watch yourself change the narrative by scoring better than you expected in the jamb examination. Waec Result

Why You Need A Copy of WAEC Past Questions And Answers Pdf in PDF Format


Our candid advice to you is this. if you do not want to keep writing Waec, then get this past question and devote quality time to study it you will be surprised at how good your grades and waec result will be. There are several other reasons why you will need to download/get this past question. But for the purpose of clarity, we will explain a few. You need this past question for the following reasons;

It will also expose you to the questions that have been asked years back as most of those questions and answers get repeated every year while some will just be rephrased. So if you don’t have a copy of this past question, then you are losing out.

  1. It, however, provides useful information about the types of questions to expect and helps you prevent unpleasant surprises.
  2. You will be able to detect and answer repeated questions quickly and easily.
  3. You will be able to find out the number of questions you will see in the exams.

WAEC Past Questions And Answers Pdf Sample

WAEC GCE Chemistry Past questions and answers (Previous Years)

  1. What condition favours the formation of the product for the endothermic reaction, N2O4(g) —><—– 2NO2(g)
  2. Decrease in pressure
  3. A decrease in volume
  4. An increase in pressure
  5. A constant volume

ANSWER: A ( Decrease in pressure)

  1. How many alkoxy alkanes can be obtained from the molecular formula C4 H4O4
  2. 1
  3. 2
  4. 3
  5. 4


  1. Element Y has two isotopes Y and Y present in the ratio 1:3. The relative atomic mass of Y would be
  2. 20.5
  3. 21
  4. 21.5
  5. 22

ANSWER: C (21.5)

  1. 100.0g of KClO3 was added to 40.0 cm^3 of water to give a saturated solution at 298K. If the solubility of the salt is 20.0 moldm^-3 at 298K, what percentage of the salt is left undissolved? {K= 39, Cl = 35.5, O = 16}
  2. 80%
  3. 60%
  4. 5%
  5. 2%
  6. Elements X and Y have electronic configuration 1S22S22P4 and 1S22S22P63S23P1 respectively. When they combine the formula of the compound formed is
  7. XY
  8. Y2X3
  9. Y2 X3
  10. Y X2


  1. A solution of 0.20 mole of NaBr and 0.20 mole of MgBr2 in 2.0 dm3 of water is to be analyzed. How many moles of Pb(NO3 )2 must be added to precipitate all the bromide as insoluble PbBr2
  2. 0.30 mol
  3. 0.10 mol
  4. 0.20 mol
  5. 0.40 mol

ANSWER: A (0.30 mol)

  1. Na2CO3 + HCl —-> NaHCO3 + NaCl. The indicator most suitable for this reaction should have pH equal to.
  2. 3
  3. 5
  4. 7
  5. 9


  1. A saturated solution of silver trioxocarbonate (IV), was found to have concentration of 1.30 x 10-5 moldm-3 . The solubility product of the trioxocarbonate (IV) is
  2. 8.79 x 10-15
  3. 1.69 x 10-10
  4. 1.82 x 10-11
  5. 9.84 x 10-10

ANSWER: A (8.79 x 10-15)

  1. When platinum electodes are used during the electrolysis of copper (II) tetraoxosulphate (IV) solution, the solution gets progressive
  2. Acidic
  3. Basic
  4. Neutral
  5. Atmospheric

ANSWER: A (Acidic)

  1. Tetraoxosulphate (VI) ions are final test using
  2. acidified silver nitrate
  3. acidic barium chloride
  4. lime water
  5. dilute hydrochloric acid

ANSWER: D (dilute hydrochloric acid)



  1. Identify the solid remaining when each of the following is heated.
    (a) lithium trioxonitrate (V)
    (b) potassium trioxonitrate (V)
    (c) calcium trioxonitrate (V)
  2. (a) When calcium oxide and coke are heated in an electric furnace, the products are carbon (ii) oxide and calcium carbide (CaC2), write the equation for this reaction.

(b) The addition of water to calcium carbide leads to the formation of calcium hydroxide and ethyne. Write the equation for the production of ethyne.

  1. Calculate the percentage by mass of silicon tetrachloride. [2 marks]
    4. Ammonia, NH3, and phosphine, Ph3, are the hydrides of the first two elements in group 5.
    (a) Draw a dot and cross diagram for the ammonia molecule. [2 marks]
    (b) Sketch and explain the shape of the ammonia molecule. [3 marks]
  2. The first ionization energy of chlorine is +1260KJmol-1.
    (a) Define the term first ionization energy.
    (b) State and explain the general trend in the values of the first ionization energy for the elements across the period, sodium to argon in the periodic table.
  3. Compound A consists of carbon and hydrogen only. The compound was found to contain 80% carbon by mass.
    (a) Calculate the empirical formula of compound A using the data above.
    (b) The relative molecular mass of compound A was found to be 30.
    Use this information to deduce the molecular formula of compound A.
    [H = 1.00 C = 12.00]
  4. State two factors other than a change in temperature or the use of a catalyst that influence the rate of a chemical reaction.


  1. (a) Two elements represented by the letters Q and R have atomic numbers 9 and 12 respectively.
    (i) Write the electron configuration of R.
    (ii) To what group does Q belong in the periodic table.
    (iii) Write the formula of the compound formed when Q combines with R.
    (iv) Explain briefly, why Q is a good oxidizing agent.
    (v) State whether R would be expected to form acidic or basic oxide.
    (b) (i) State two assumptions of the kinetic theory of gases.
    (ii) When some solids are heated, they change directly into the gaseous state. What name is given to this phenomenon?
    (iii) List two substances that exhibit the phenomenon mentioned in (ii).
    (iv) Write an expression to show the mathematical relationship between the rate of diffusion of a gas and its vapour.
  2. An aqueous solution has a pH of 4.0.
    (a) (i) What is the hydrogen ion concentration of the solution?
    (ii) What effect will it have on litmus paper?
    (iii) Which of the following salt solutions would have the same effect on litmus? Give a reason for your answer. NH4Cl(aq); NaCl(aq) ; CH3OON(aq).
    (b) (i) Differentiate between a fine chemical and a heavy chemical.
    (ii) Name two sources of air pollution.
    (iii) Suggest one way of reducing air pollution in cities
  3. (a) (i) Explain briefly the fermentation process.
    (ii) Write a balanced equation for the fermentation of glucose.
    (iii) What substance must be added to glucose solution to ferment it?
    (iv) Explain briefly why tightly corked glass filled to the brim with palm wine shatters on standing.
    (b) State one industrial application of each of the following methods of separation:
    (i) Crystallization;
    (ii) Fractional distillation.
    (c) Explain the following terms:
    (i) Saponification;
    (ii) Esterification.
    (d) Write a balanced equation to illustrate each of the terms in (c).
    (e) i) What is hydrocarbon compound?
    (ii) Name two principal sources of hydrocarbons.

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7 Tips to Prepare for WAEC Exams

  1. Don’t make reading your hobby: A lot of people put reading as a hobby in their CV, they might be right because they have finished schooling. But “You” are still schooling, so reading should be in top priority and not as a hobby. Read far and wide to enhance your level of aptitude
  2. Get Exams Preparation Materials: These involve textbooks, dictionaries, Babcock University Post UTME Past Questions and Answers, mock questions, and others. These materials will enhance your mastering of the scope of the exams you are expecting.
  3. Attend Extramural Classes: Register and attend extramural classes at your location. This class will not only help you refresh your memory but will boast your classroom understanding and discoveries of new knowledge.
  4. Sleep when you feel like: When you are preparing for any exams, sleeping is very important because it helps in the consolidation of memory. Caution: Only sleep when you feel like it and don’t oversleep.
  5. Make sure you are healthy: Sickness can cause excessive feelings of tiredness and fatigue and will not allow you to concentrate on reading. If you are feeling as if you are not well, report to your parent, a nurse or a doctor. Make sure you are well. Waec Result
  6. Eat when you feel like: During the exam preparation period, you are advised not to overeat, so as to avoid sleep. You need to eat little and light food whenever you feel like eating. Eat more of fruits, drink milk and glucose. This will help you to enhance retention. Npower Recruitment
  7. Reduce your time in social media: Some people live their entire life on Facebook, Twitter, WhatsApp, Messenger chat. This is so bad and catastrophic if you are preparing for exams. Try and reduce your time spent on social media during this time. Maybe after the exams, you can go back and sleep in it.

If you like these tips, consider sharing them with your friends and relatives. Do you have a question or comments? Put it on the comment form below. We will be pleased to hear from you and help you to score as high as possible.

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