Past Questions And Answers
Write an article for publication in a national newspaper on the importance of education in national development.
View Discussion (0)WAEC 2013 THEORYSubscription received in respect of a future period is
- A) Subscription deposit
- B) Subscription in advance
- C) Accrued subscription
- D) Subscription in arrears
The principles of agricultural extension includes the following except
- A. Gain confidence of your audience
- B. Programmes must undergo continuous evaluation
- C. Programmes should be flexible
- D. Reduce the confidence of your audience
From the words lettered A to D below each of the following sentences, choose the word that is nearest in meaning to the underlined word.
Mr. Preye is astern father.
- A. wicked
- B. loving
- C. conservative
- D. strict
Which of the following is used to inform the buyer that goods available for sale?
- A. Quotation
- B. Proforma
- C. Advice note
- D. Despatch book
The commission established to handle the electoral activities in the Second Republic of Nigeria was
- A. FEDECO
- B. NEC
- C. INEC
- D. NECON
If \(4x^{2} + 5kx + 10\) is a perfect square, find the value of k.
- A. \(\frac{5\sqrt{10}}{4}\)
- B. \(4\sqrt{10}\)
- C. \(5\sqrt{10}\)
- D. \(\frac{4\sqrt{10}}{5}\)
The diagram below is an illustration of the growth of a plant in a water culture. After a few days, the solution turned green and the plant died. Use this to answer this question.
What precaution should have been taken to prevent the solution from turning green?

- A. use a non-green plant for the experiment
- B. aerate the solution daily
- C. cover the culture vessel with opaque paper
- D. keep cotton wool around the seedling to make it dry
A government headed by a person elected for a fixed period of time is referred to as
- A. monarchical
- B. socialist
- C. republican
- D. military
(i) State Two assumptions of the kinetic theory of gases
(ii) When some solids are heated, they change directly into the gaseous state. What narne is given to this phenomenon?
(iii) List two substances which exhibit the phenomenon referred to in (a)(ii) above
(iv) Write an expression to show the mathematical relationship between the rate of diffusion of a gas and its vapour density.
(b) Consider the following equilibrium reaction:
3Fe\(_{(s)}\) + 4H\(_2\)O\(_{(g)}\) \(\rightleftharpoons\) FeO\(_3\)O\(_{4(s)}\) + 4H\(_{2(g)}\), \(\Delta\)H = - 150KJ mol\(^{-1}\)
Explain the effect of the following factors on the position of equilibrium: (i) tecrease in temperature; (ii) Increase in pressure; (iii) Removal of hydrogen.
(c) . Three beakers labelled P, Q and S each contained zinc metal of the same mass but in different forms. P contained a length of zinc rod, Q contained zinc dust while S contained zinc foil. 100cm\(^3\) of 5.0 mol dm\(^{-3}\) hydrochloric acid was added to each beaker to react with all the zinc.
(i) State the order in which the reaction came to completion in beakers P,Q and S starting with the fastest.
(ii) Give reason for your answer in (c)(i) above
(iii) Write an equation to represent the reaction between zinc rid the hydrochloric acid.
(d) (i) What is meant by pH of a solution?
(ii)(I) State with reason in each case whether the pH would increase, decrease or remain constant if the following experiments were carried out Neutralizing bench HNO\(_3\);
II. Diluting 25.0 cm\(^3\) of a given NaOH solution to 100.0cm\(^3\) Concentrating a solution of NaCI.
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