The West African Examination Council have released the practical specimen and instruction to practicals, and it has been sent to all schools. Expospy have compiled the text version for you and the practical specimens for Chemistry, Physics, Biology and Agric Science is now available.
Below is the Official Waec 2020 chemistry practical Specimen provided by Waec official and distributed to all schools that are seating for this year’s Waec Examination.
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WAEC 2020/2021 CHEMISTRY PRACTICAL SPECIMEN
- Great care should be taken to ensure that the information given in items 2 and 3 below does not reach the candidates either directly or indirectly before the examination.
- In addition to the fittings and reagents normally contained in a Chemistry laboratory. the following apparatus and materials will be required by each candidate:
(a) one burette of 50 cm’ capacity;
(b) one pipette, either 20 cm’ or 25 cur’. All candidates at one centre must use pipettes of the same volume. These should be clean and free from grease;
(c) the usual apparatus for titration;
(d) the usual apparatus and reagents for qualitative work including the following with all reagents appropriately labelled:
(i) 10 % dilute sodium hydroxide solution;
(ii) dilute hydrochloric acid;
(iii) dilute trioxonitrate (V) acid;
(iv) silver trioxonitrate (V) solution;
(v) acidified potassium dichromate solution;
(vi) aqueous ammonia;
(vii) lime water;
(viii) red and blue litmus papers;
(ix) dilute tetraoxosulphate (VI) acid;
(f) filtration apparatus;
(g) one beaker,
(h) one boiling tube;
(i) four test tubes;
(j) methyl orange as indicator; (1c) mathematical table/calculator,
(1) wash bottle containing distilled/deionized water;
(m) burning splint;
(n) watch glass;
(o) bunsen bumer/source of heat;
3. Each candidate should be supplied with the following, where n is the candidate’s serial number.
(a) 150 cin3 of a solution of HNO3 in a corked flask or bottle, labelled ‘An‘.
These should all be the same containing 10.0 cm3 of concentrated HNO3 (about 70 %) per dm’ of solution.
(b) 150 cm’ of NaOH solution in a corked flask or bottle labelled ‘Be‘.
These should all be the same containing 4.0 g of NaOH per dm’ of solution.
(c) About 15.0 cm3 of an organic compound, propan -2-01 in a corked specimen tube or test tube labelled ‘Cu’.
This must be the same for all candidates.
(d) One spatulaful of crystals of iodine in a specimen bottle labelled ‘Dn‘.
This must be the same for all candidates.
- In all cases, more materials may be issued if required.
- The actual concentrations of A and B must be stated on the Supervisor’s Report Form.
The candidates will assume that the concentrations are exactly as stated in the question paper.
- It should be noted that schools are not allowed to amend the .
information provided on the question paper or substitute any substance/solution for those specified in these instructions.
ARRANGEMENT AND SERIAL NUMBERS OF CANDIDATES
- The laboratory places should be numbered serially and the candidates should be allotted these places strictly in the order of their index numbers.
The number of every specimen supplied to each candidate should be the same as his or her serial number.
- If a candidate is absent, his or her serial number should not be allotted to another candidate.
- If the candidates are divided into a number of sets, the serial numbers should be continued through the sets, so that no serial number is repeated.
- At the beginning of the examination, it should be ensured that the candidates record their serial numbers as well as the index numbers
on the front pages of their answer books, as they will be marked according to their serial numbers.
- Supervisor’s Report Forms are provided separately. You must enclose a completed Report Form in each envelope of scripts.
- The chemistry teacher should carry out the titrations required of the candidates in Question 1. The titration figures should be to at least one decimal place and should be carefully verified. Unless this is done at the some time as the candidates’ own titrations, wide variations could set in and the candidates may be unavoidably penalized.
- Any particular difficulties experienced by any candidate should be reported especially if the Examiner would be unable to discover these from the scripts.
◊CAUTION STATEMENT ON THE TOXICITY OF CHEMICALS
- It is important that you remind candidates that chemicals could be dangerous when they are not handled properly. Before the practical examination starts, read.out the following statements to candidates.
“Even though care has been taken to select the chemicals you will wprk with, you are being reminded that chemicals could be dangerous. It is therefore important that you handle them carefully.
Call the attention of your invigilator as soon as you start having any unusual sensation. Wash your mouth thoroughly with plenty of water, should any chemical get into it. Remember to wash your hands thbroughly as soon as you finish handling the chemicals.”
It is however expected that you will put the appropriate arrangement in place to prevent the occurrence of any accident.
WAEC 2020/2021 PHYSICS PRACTICAL SPECIMEN
Below is the Official Waec 2020 Physics practical Specimen provided by Waec official and distributed to all schools that are seating for this year’s Waec Examination.
WAEC 2020 PHYSICS SPECIMEN
(1) Thread (100 cm);
(2) Metre rule; (3) Five 20 g masses;
(4) Four 10 g masses;
(5) Retort stand and clamp;
(6) A 50 g mass sealed and labelled Mx.
(1) Drawing board;
(2) Drawing pins;
(3) Four optical pins;
(4) Triangular glass or p•rspex prism.
(1) Resistance box;
(2) Ammeter (0 – 3 A);
(3) Voltmeter (0 – 3 V);
(4) 1 C2 resistor, sealed and labelled Itx;
(6) Accumulator or cells of e.m.f. 3 V ;
(7) Connecting wires.
♦CONDUCTING THE PRACTICAL PHYSICS TEST
3. The following announcement should be made to the candidates at the beginning of the examination:
`The Examiner does not want you to waste your time
because you cannot proceed with an
experiment. Any candidate, therefore, who cannot get on with the experiment after spending 15 minutes on it, may come
to me and ask for help.’
- The Physics Teacher should be allowed to give a ‘Lint to a candidate who is unable to proceed with the experiment.
5. The following regulations must be strictly adhered to.
(a) No hint should be announced to the candidates as a whole.
(b) A candidate who is unable to proceed and requires assistance must come up to you and state his or her difficulty. The candidate should be told that the Examiner will be informed of any assistance given in this way.
(c) A note must be made, on the Report Form, of any assistance given to any candidate, with the name and index number of the candidate.
6. Report Forms are provided separately, on which you are required to state the following:
(a) detailed information about the apparatus where necessary;
(b) any particular difficulties experienced by any candidate, especially if the Examiner would be unable to discover these from the scripts;
(c) any departure from the specified items which could not be avoided;
(d) any assistance given to the candidates under the regulations explained in 5 above.
- In cases where several sets of apparatus are provided for a question and specific information about the appAratus is required by the Examiner, each piece of apparatus about which the information is required, and which may differ slightly for different candidates. must he clearly m,ked letters A, B, C, etc. and the corresponding information must be clearly reported, showing which apparatus was supplied to which candidate. The candidates should be instruct,d to record these letters is their scripts.
- A completed Report Form must be enclosed in each envelope of scripts.
OFFICIAL WAEC 2020 BIOLOGY PRACTICAL SPECIMEN
Instructions to Schools:
1. Great care should be taken to ensure that the information given below does not reach the candidates either directly or indirectly before the examination.
2. Each candidate should be instructed to bring to the examination room:
(a) sharpened drawing pencils (preferably 2B) at least 15 cm long;
(b) an eraser,
(c) a ruler.
- (a) Each candidate should be provided with the following groups of specimens:
Group I (For all candidates):
Specimen A – Clayey soil.
Specimen B – A solution of one part of egg albumen mixed with two parts of water in a test tube/beaker.
Specimen C – Mushroom (freshly plucked).
Specimen D – Giant land snail.
Specimen E – Transverse section of ripe pawpaw fruit.
Specimen F – Transverse section of ripe tomato fruit.
Specimen G – Fresh pod of cowpea plant.
Specimen H – Complete, green pod of Pride of Barbados plant.
Specimen J – Fresh okra fruit.
Group II (For candidates in Ghana only)
Specimen K – Adult cockroach (dead).
Specimen L – Ny.lph of cockroach (dead).
Specimen M – Egg case of cockroach/ootheca.
Specimen N – Moss plant in a Petri dish.
Group III (For candidates in Nigeria, Sierra Leone, The Gambia and Liberia)
Specimen P – Potassium permanganate solution.
Specimen Q – Granulated sugar (100 g) in a beaker.
Specimen R – 5 – day old boiled egg with shell intact stored in a warn place/rotten egg with shell intact. Specimen S – 10 ml of lime/lemon juice in a test tube.
(i) All specimens can be provided as group specimens for five (5) to ten (10) candidates;
(ii) All specimens in each group must carry individual labels (e.g. A, B, C, D, E, F, G, H and J in Group I).
(b) It is essential that each candidate should be provided with the following materials:
(i) glass jar cover/Petri dish;
(iv) hand lens/magnifying lens;
(v) scalpel/ blunt knife;
(vi) iodine solution;
(vii) sodium hydroxide solution;
(ix) tea spoon;
(x) stop clock/ watch;
(xiii) ink pad containing ink moderately;
(xiv) white paper/tissue paper;
(xv) white tile.
- Report Forms are provided separately on which you are required to:
(a) supply the necessary information about the specimens;
(b) report on any difficulty in the conduct of the examination;
(c) report any particular difficulty experienced by any candidate during the conduct of the examination, especially if the examiner would be unable to discover this from the scripts;
(d) carry out and record experimental observations as directed in the Report Form.
5. You must enclose a completed Report Form in each envelope of script..
OFFICIAL WAEC 2020 AGRIC SCIENCE PRACTICAL SPECIMEN:
- (a) The provision of specimens, materials and equipment for the test is your responsibility.
(i) Where a specimen is not readily available in sufficient quantity, it should be shared among small groups of candidates.
(ii) Each candidate should be provided with the following specimens labelled accordingly:
B: Pick axe;
D: Budding knife;
For specimen F, you are requested to get 50 g of sandy loam soil and put it in a 250 C1713 measuring cylinder. Add 200 CM’ of water to the soil in the measuring cylinder. Add small quantity (a few drops) of hydrogen peroxide to the content of the measuring cylinder in order to bleak soil lumps.
Stir the contents in the measuring cylinder with a stiffer/glass rod vigorously.
Allow the contents to settle for 24 hours.
Label the experimental set-up F.
G: Cassava tuber (fresh);
H: Yam tuber;
I: Onion bulbs
J: Pepper fruits;
N: Lime (calcium carbonate) (labelled).
3. Report Forms are provided separately on which you are requested to: (a) supply details of the specimens and materials provided;
(b) report on any particular difficulties experienced by any candidate especially if the examiner would be unable to discover these from the scripts;
(c) make and record experimental observations.
- You must enclose a completed Report Form in each envelope of scripts.