WAEC Chemistry practical 2021 Questions
WAEC CHEMISTRY PRACTICAL 2021 Questions and Answers: Get WAEC CHEMISTRY PRACTICAL 2021 answers Objective and Essay. See free WAEC Chemistry Practical 2021 Questions and Answers & specimen for Alternative B.
WAEC Chemistry Practical Questions and Answers 2021 Specimen
WAEC CHEMISTRY PRACTICAL SPECIMEN:
(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) 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 paper.
(ix) dilute tetraoxosulphate(vi) acid.
(f) filtration apparatus.
(g) one beaker
(h) one boiling tube
(i) four test tubes.
(j) Methyl orange as an indicator.
(k) mathematical table/calculator
(l) wash bottle containing distilled/deionized water.
(m) a burning splint
(n) watch glass
(o) bunsen burner/source of heat
(3) Each candidate should be supplied with the following where n is the candidate’s serial number.
(a) 150cm³ of a solution of HCL, in a corked flask or bottle, labelled “An”. These should all be the same containing 9.0cm³ of concentrated HCL (about 60%) per dm³ of solution.
(b) 150cm³ of NaOH solution in a corked flask or bottle labelled “Bn”. These should all be the same containing 4.8g of NaOH per dm³ of solution.
(c) one spatula of a uniform mixture of CUSO4 and (NH4)2CO3 in a specimen bottle and corked immediately, and labelled “Cn”. The components of the mixture should be in the ratio 1 : 1 by mass
(d) One spatula full of crystals of iodine in a specimen bottle labelled “Dn”. This must be the same for all candidates.
WAEC Chemistry practical Questions and Answers 2021 Objective Alternative B
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WAEC 2021 Chemistry Practical Answers / Expo
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