WAEC 2020! WAEC 2020! WAEC 2020!. 2020 Waec Chemistry Practical Specimen Questions For all Candidates.

WAEC 2020! WAEC 2020! WAEC 2020!.

2020 Waec Chemistry Practical

Specimen Questions For all

Candidates.

………………………………

……………………………….

  1. 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.

  1. 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) 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.

(e) Spatula

(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

watch glass

(o) bunsen burner/source of heat

(p) droppers

(3) Each candidate should be supplied with the

following where n is the candidate’s serial number.

(a) 150cm³ of a solution of trioxonitrate (v) acid in a

corked flask or bottle, labelled “An”. These should all

be the same containing 10.0cm³ of concentrated

trioxonitrate (v) acid (about 70%) per dm³ of solution.

(b) 150cm³ of NaOH solution in a corked flask or

bottle labelled “Bn”. These should all be the same

containing 4.0g of NAOH per dm³ of solution.

(c) About 15.0cm³ of an organic Compound,

Propan-2-ol in a corked

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WAEC 2020! WAEC 2020! WAEC 2020!. 2020 Waec Chemistry Practical Specimen Questions For all Candidates.

WAEC 2020! WAEC 2020! WAEC 2020!.

2020 Waec Chemistry Practical

Specimen Questions For all

Candidates.

………………………………

……………………………….

  1. 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.

  1. 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) 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.

(e) Spatula

(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

watch glass

(o) bunsen burner/source of heat

(p) droppers

(3) Each candidate should be supplied with the

following where n is the candidate’s serial number.

(a) 150cm³ of a solution of trioxonitrate (v) acid in a

corked flask or bottle, labelled “An”. These should all

be the same containing 10.0cm³ of concentrated

trioxonitrate (v) acid (about 70%) per dm³ of solution.

(b) 150cm³ of NaOH solution in a corked flask or

bottle labelled “Bn”. These should all be the same

containing 4.0g of NAOH per dm³ of solution.

(c) About 15.0cm³ of an organic Compound,

Propan-2-ol in a corked

Be the first to comment

Leave a Reply