D: Hand trowel
F: Hand fork
For specimens G, H and I, you are requested to get some
quantity of Sandy soil. Divide the quantity of Sandy soil into
Wash the first portion which is to be labelled G with a neutral
solution(water) until the soup is neither acidic nor alkaline then
air-dry the soil.
To the second portion which is to be labelled H, add some
quantity of Hydrochloric acid(HCL) and air-dry.
To the third portion which is to be labelled I, add some
quantity of sodium Hydroxide(NaOH) solution and air-dry.
Then supply to each candidate, samples of specimens G, H
and I each in a beaker, some quantity of water, blue litmus
paper, red litmus paper and a
J: Maize grain damaged by weevils
K: Yam tuber damaged by yam beetles
L: Cassava leaves showing mosaic disease symptoms
M: Tomato fruits showing fruit rot symptoms
N: Liver fluke(preserved/picture/diagram)
P: Trypanosome parasite(diagram/picture)
+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 50cm³ capacity;
(b) One pipette, either 20cm³ or 25cm³. 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) Red and blue litmus paper,
(ii) aqueous ammonia,
(iii) dilute hydrochloric acid,
(iv) dilute sodium hydroxide solution,
(v) barium chloride solution,
(vi) dilute trioxonitrate(v) acid,
(vii) silver trioxonitrate(v)solution,
(viii) Lime water
(e) glass rod;
(f) filtration apparatus,
(h) two boiling tubes,
(i) four test tubes,
(j) wash bottle containing distilled/deionized water,
(k) mathematical table/calculator.
+Each candidate should be supplied with the following, where
‘n’ is the candidate’s serial number.
(a) 150cm³ of potassium tetraoxomanganate(VII)solution in a
corked flask or bottled labelled ‘A’n. These should all be the
same containing 7.7g of KMnO4 per dm³ of solution.
(b) 150cm³ of iron(II)chloride solution in a corked flask or bottle
labelled ‘Nn’. These should all be the same containing 19.1g of
FeCl2 per dm³ of solution.
NB- FeCl2 solution should be freshly prepared.
– Each candidate should be provided with 150cm³ 2M H2SO4.
(c) One spatulaful of copper(II)chloride in a specimen bottle
labelled ‘Cn’ and one spatulaful of ammonia carbonate in a
specimen bottle labelled ‘Dn’.
Group I ( For all candidates)
Specimen A – Fresh/wet preserved mosquito larva in a petri
dish containing water.
Specimen B – Fresh/wet preserved maggot in a petri dish
Specimen C – Gill of fish (freshly procured) in a petri dish
Specimen D – Lung of a small mammal(freshly preserved).
Specimen E – Dicotyledonous leaf (freshly plucked).
Specimen F – Membranous wing of a cockroach.
Group III (For candidates in Nigeria and the Gambia only)
Specimen K – Flower of pride of Barbados or caesalpinia
Specimen L – Mature Elephant grass or Guinea grass.
Specimen M – Flower of Hibiscus plant.
(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 (Eg
A, B, C, D, E and F in Group I)
+It is essential that each candidate should be provided with the
(i) glass jar cover or petri dish,
(ii) a beaker containing water,
(iii) a pair of forceps,
(iv) a hand of lens/magnifying lens,
(v) scalpel OR razor blade/knife