WAEC 2018 Specimen for all subjects. The West Africa Examination Council specimen is available on this post. Candidates are required to carefully check through the each subject as the content is very Lengthy. it also contains the exam sample of each subject.
There will be three papers: Papers 1, 2 and 3 all of which must be taken. Papers 1 and 2 will be a composite paper to be taken at one sitting.
PAPER 1: Will consist of fifty multiple choice questions to be answered within 50 minutes for 50 marks.
PAPER 2: Will consist of six essay questions with each drawn from at least two themes in the syllabus. Candidates will be required to answer five of the questions within 2 hours 10 minutes for 90 marks.
PAPER 3: Will be a practical paper for school candidates and alternative to practical paper for private candidates. It will consist of four questions, all of which should be answered within 1½ hours for 60 marks.
WAEC 2018 Specimen for all subjects
- The device which helps to regulate heat in an incubator is the
- Which of the following statements about crop production is not correct?
- Onions are commonly grown in the rainforest zones.
- Yam, cocoyam and cassava are grown in both the rainforest and the savanna regions.
- Some foreign vegetable crops are grown in and around urban centres.
- Carrots are commonly grown in the savanna and moist vegetation belts.
- Which of the following is a disadvantage of surface irrigation?
- The quantity of water lost is high.
- Water is evenly distributed over the farmland
- It is very cheap to operate.
- The system is suitable for paddy rice cultivation.
- Fine soil tilth is produced by the use of
- The problems of farm mechanization in West Africa include the following except
- reduction of farm drudgery.
- small farm holdings.
- poverty of farmers.
- poor topography.
(1) (a) Explain each of the following terms as used in animal production:
(ii) dry cow;
(iv) quarantine. [8 marks]
(b) Describe the life cycle of roundworm (Ascaris lumbricoides). [4 marks]
(c) Explain the term farm mechanization. [2 marks]
(d) Name four tractor coupled implements [4 marks]
(2) (a) State six limitations of farm mechanization in West Africa. [6 marks]
(b) Suggest six ways of encouraging farm mechanization in West Africa.
[6 marks] (c) List four methods of identification in cattle management. [4 marks] (d) What is debeaking in poultry management? [2 marks]
(3) (a) Mention two processes that release carbon dioxide into the atmosphere[2 marks] (b) Name four storage pests of crops [4 marks] (c) State two functions of Potassium in crops. [2 marks]
(d) List three ways by which each of the following biotic factors
affects agricultural production:
(i) parasites; (ii) soil organisms. [6 marks]
(e) State four advantages of zero tillage. [4 marks
WAEC 2018 Specimen for all subjects
AIR-CONDITIONING AND REFRIGERATION
There will be three papers, Papers 1, 2 and 3, all of which must be taken. Papers 1 and 2 shall be a composite paper to be taken at one sitting.
PAPER 1: will consist of forty multiple-choice objective questions all of which are to be answered in 1 hour for 40 marks.
PAPER 2: will consist of five essay questions. Candidates will be required to answer any four in 1½ hours for 60 marks.
PAPER 3: will be a practical test of 2 hour duration. It will consist of two compulsory questions for 100 marks.
A list of materials shall be made available to the schools not less than two weeks before the paper is taken for material procurement and relevant preparation. Candidates will be expected to report at the examination venue to carry out the task in the presence of the examiner.
ALTERNATIVE TO PRACTICAL TEST
The Council may consider testing candidates’ ability in practical work as prescribed in the syllabus in the event that materials for the actual
practical test cannot be acquired. For this alternative test, there will be
two compulsory sets of written questions to be answered in 2 hours for
1. Which of the following is NOT a property of an ideal refrigerant?
A. High specific heat
B. Stability in complete cycle
C. Large latent heat of vaporization
D. High critical temperature
2. Wet bulb depression comes to zero when the air is fully
3. Which of the following is NOT a component of a vapour compression refrigeration system?
4. The heat transfer during an adiabatic process is
5. The material used in the refrigeration drier to absorb the moisture is the
A. calcium chloride.
B. silica gel.
C. calcium sulphate.
D. sodium hydroxide.
6. Heat absorption in refrigeration system takes place in the
7. A temperature of – 40ºF on the celcius scale is
A. – O oC.
B. – 38 oC.
C. – 40 oC.
D. – 50 oC.
8. The commonly used refrigerant in a domestic refrigerator is
A. R – 717.
B. R – 764.
C. R – 600A.
D. R – 290A.
9. The expansion of the refrigerant in a domestic refrigerator takes place in the
10. Silica gel is used to absorb moisture from refrigerant in the
1. (a) List three types of refrigerant controls that are commonly used in refrigeration
and air conditioning systems.
(b) (i) Sketch a capillary tube control.
(ii) State the application of the capillary tube control sketched in (b)(i).
(c) State three sources of financing an air conditioning and refrigeration business costing 1.5 millon naira.
2. (a) State four advantages an individual will have over partnering with another person
in a business of refrigeration and air conditioning.
(b) Sketch the vapour compression refrigeration system.
(c) label any three parts of the sketch in (b).
3. (a) State three properties of a refrigerant.
(b) List the cylinder colour code for each of the following:
(i) R – 134a;
(ii) R – 717;
(iii) R – 600wa.
1. Using the material provided below, construct an evaporator suitable for 1/8 hp refrigerator
(a) ¼ copper piper (½ roll);
(b) aluminium flat plate 1200mm x 1000 mm x 16 mm;
(d) rivet gun;
(e) rivet pin;
(g) bending spring;
2. Using appropriate tools and equipment produce the following joints by brazing T, V, B
ANIMAL HUSBANDRY (ALTERNATIVE A)
For candidates in Ghana only
SCHEME OF EXAMINATION
There will be three papers, Papers 1, 2 and 3, all of which must be taken. Papers 1 and 2 will be a composite paper to be taken at one sitting.
PAPER 1: Will consist of fifty multiple choice objective questions all of which must be
answered within 1 hour for 50 marks.
PAPER 2: Will consist of six essay-type questions. Candidates will be required to answer
four questions within 2 hours for 80 marks.
PAPER 3: Will be a practical paper for school candidates or a test of practical paper for private
candidates. The paper will consist of four questions all of which must be answered
within 2 hours for 60 marks.
1. Microbes in the rumen of farm animals are able to manufacture
A. vitamin A.
B. vitamin B.
C. vitamin D.
D. vitamin E.
2. Mange is caused by
3. Which of the following animal products is used in the production of buttons?
4. Parturition in sows is known as
5. Which of the following types of chicken requires the highest percentage of protein in
C. Breeder hen
D. Broiler hen
6. The average gestation period of a cow is
A. 114 days.
B. 145 days.
C. 210 days.
D. 280 days.
7. The end product of herbage fermentation in the rumen of a cow is
C. amino acids.
D. volatile fatty acids.
8. A lamb with a fractured bone would require a feed containing more
9. Which of the following parasites possesses hooks?
C. Liver fluke
10. One effect of heat stress on farm animals is
A. reduced water intake.
B. increased feed intake.
C. occurrence of abortion.
D. occurrence of oestrus.
1. (a) State five ways of controlling endoparasites in animal production.
(b) Give three reasons why it is advisable to provide farm animals with a
(c) Discuss five factors that affects the digestibility feed.
2. (a) State five objectives of animal improvement.
(b) Mention five ways by which farm animals could regulate their farm temperature. [5 marks]
(c) Explain how each of the following factors affect animal production in West Africa:
WAEC 2018 Specimen for all subjects
1. List of specimens
Specimen A – Electric bulb
Specimen B – Sawdust
(a) Identify each of specimens A and B. [2 marks]
(b) State two main purposes for which specimen A is used in a broader house.
(c) Name two other equipments that could be used as substitutes for specimen A. [4 marks]
(d) Explain two disadvantages of the use of specimen B as litter material. [4 marks]
(TEST OF PRACTICAL WORK)
1. The figure 1 below is an illustration of an endoparasite of farm animals.
Study it carefully and answer the questions that follow.
(a) Identify the parasite illustrated above. [1 mark]
(b) State two characteristics of the parasite [2 marks]
(c) (i) Name two farm animals that could be infected by the parasite.
(ii) State five effects of the parasite on its host. [7 marks]
(d) State three ways of controlling the parasite.
APPLIED ELECTRICITY/ BASIC ELECTRICITY
There will be three papers, Papers 1, 2 and 3 all of which must be taken. Papers 1 and 2 will be a composite paper to be taken at one sitting.
PAPER 1 will consist of fifty multiple-choice objective questions to be answered in 1 hour for 50 marks.
PAPER 2 will consist of three sections: Sections A, B and C as follows:
Section A will be compulsory for all candidates. It will consist of four questions out of which candidates will be required to answer any three.
Section B will be for candidates in Ghana only. It will consist of three questions out of which candidates will be required to answer two.
Section C will be for candidates in Nigeria, Sierra Leone and The Gambia only. It will also consist of three questions out of which candidates will be required to answer two.
Thus, candidates will be required to answer five questions in all. The paper will last 1 hour and carry 50 marks.
PAPER 3 will be a practical paper of two experiments both of which are to be carried out by candidates in 3 hours for 100 marks.
1. Which of the following is a consequence of earth fault?
A. Blown fuse
B. Disconnected terminal not touching a metallic part of the appliance
C. A cut along conductor path
D. A conductor touching a metallic part of the appliance
Use the scenario below to answer Questions 2 to 4.
In Mrs Obi’s kitchen, there are electric kettle, food blender, water heater and boiling ring. One morning, Mrs Obi wanted to blend some fruits but the food blender could not come on. A check at the socket outlet showed that a power source of 230 volts was available. Mrs Obi then took the blender for repair.
2. The appliances in Mrs. Obi’s kitchen can be classified as
A. electrical appliances.
B. mechanical appliances.
C. energy appliances.
D. hand-held appliances.
3. In the food blender, the energy conversion is from
A. electrical energy to heat energy.
B. electrical energy to mechanical energy.
C. heat energy to mechanical energy.
D. electrical energy to sound energy.
4. The possible fault of the blender is
A. open circuit.
B. short circuit.
C. earth circuit.
5. The resistance of a soldering iron drawing a current of 2 A from a 230 V source is
A. 115 Ω.
B. 228 Ω.
C. 232 Ω.
D. 460 Ω.
(a) A given circuit has three resistors connected in series namely 1 Ω, 3 Ω and 4 Ω powered by a 24 V source. Calculate the
(i) total resistance;
(ii) total current flowing through the circuit;
(iii) voltage drop across each resistor.
(b) A 15 Ω resistor and a capacitor of 20 Ω capacitive reactance are placed in parallel across a 120 V source.
(i) Draw the circuit diagram.
(ii) Calculate the: I. current flowing in the resistor; II. current flowing in the circuit;
III. total impedance.
(a) Draw a 3-input circuit arrangement using switches for an:(i) OR logic gate;
(ii) AND logic gate.
(b) Using 2-input NAND, AND and OR logic gates only, draw a logic diagram
for the Boolean equation: . B + AC = Y
(c) Draw a truth table for the Boolean expression: B.C + A = Z
You are provided with the following apparatus:
one d.c. power supply (0 -12 V);
one d.c. milliammeter (0 – 100 mA);
three 10 Ω, W resistors (R1, R2 and R3)
three 33 Ω, W resistors (R4, R5 and R6)
one toggle switch;
one soldering iron with resin-cored solder;
veroboard/ quick test board;
long nose pliers;
AIM: To determine the equivalent resistance of a circuit.
(a) Connect the circuit as shown above.
(b) Ask the supervisor to check the circuit connection.
(c) Copy Table 1 into your answer booklet.
Ammeter reading (A)
(d) Close switch S.
(e) Adjust the power supply to obtain a reading of 3 V.
(f) Read and record the reading of the ammeter in Table 1.
(g) Repeat steps (e) and (f) for the other voltages in Table 1.
(h) Plot a graph of voltage V (V) on the y-axis against current I (A) on the x-axis.
(i) Determine the slope (L) of the graph.
(j) State the equivalent resistance of the circuit.