2023 NECO Chemistry Practical Specimens
2023 NECO Chemistry Practical Specimens
The 2023 NECO Chemistry Practical specimen has been officially released in our website. You are expected to study the 2023 NECO CHEMISTRY PRACTICAL SPECIMENS listed below.
If you are searching of the 2023 NECO Chemistry practical specimens then you are at the right place because we have provided all the 2023 NECO Chemistry specimens on tis page.
THE 2023 NECO CHEMISTRY PRACTICAL SPECIMENS ARE LISTED BELOW
INSTRUCTION(S) TO SCHOOL
1. Great care should be taken to ensure that the information given below does not reach any of the candidates either directly or indirectly before the examination date.
2. In addition to the apparatus and reagents expected to be available in a Secondary School chemistry Laboratory, each candidate will require the following:
(a) One burette of 50cm3
(b) One Pipette of either 20cm3 or 25cm3
Note: All candidates in the same examination Centre must use pipettes of the same volume of either 20cm3 or 25cm3 and the pipette used should be indicated.
(c) The usual apparatus for Acid Base filtration
(d) The usual apparatus and reagent for qualitative work which includs:
(i) Dilute sodium hydroxide solution
(ii) Dilute ammonia solution
(iii) Dilute hydrochloric acid
(iv) Barium Chloride solution
(v) Distilled water
(vi) Red and blue litmus paper
(vii) Phenolphthalein
(viii) Methyl orange
(ix) One boiling tube
(x) Five test tubes
(xi) Source of heat
(xii) Wash bottle containing distilled water
(xiii) Filtration apparatus
3. Each candidate should also be supplied with the following:
(a) 150 cm3 of tetraoxosulphate (VI) solution in a corked flask labelled ‘An’. These should all be the same containing 2.20cm3 of concentrated tetraoxosulphate (VI) acid per dm3 of solution.
(b) 150 cm3 of Na2CO3 in a corked flask or bottle labelled ‘Bn’. These should all be the same containing 3.6 g of sodium trioxocarbonate (IV) pellet per dm3 of solution.
(c) One spatula of Na2CO3 in a corked specimen bottle labelled ‘Cn’. Note ‘n’ is the candidate’s serial number.
where ‘n’ represents the candidate’s serial number on the NECO register.
The actual concentration of A and B must be stated on the Teacher’s report from while the candidates should make use of the concentration stated in the question paper.
6. Please, on no account should you substitute any substance or solution for those specified in the instructions above.
ARRANGEMENT AND SERIAL NUMBER OF CANDIDATES
7. Please for work by candidates in the laboratory should number serially and the candidate allotted this place strictly in order for the examination number.
8. The number of every specimen supplied to each candidate should be continued through the sets, to ensure that no serial number is repeated.
9. If candidates are divided into different sets, the serial numbers should be continued through the sets, to ensure that no serial number is repeated
10. Ensure that the candidates record their serial numbers as well as their registration numbers on the front page of their answer booklets at the commencement of the examination.
TEACHER’S REPORT
11. Ensure that a completed Teacher’s Report form is enclosed in each envelope of the script. This report form is provided separately.
12. Carry out the titration required of the candidates in question one and record the titre values, which should be at least, one decimal place in the spaces provided for these in the Teacher Report Form. Verify the titre values before recording them.
13. All difficulties experienced by candidates should be reported, especially if the examiner would be unable to discover these from the scripts.
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