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NECO Chemistry Practical 2025 Date
According to the NECO timetable, The NECO Chemistry Practical 2025 paper will hold on 30th june, 2025 by 10:00am – 12:00pm.
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NECO Chemistry Practical Specimens 2025
Instructions
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. 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 (50 cm³)
(b) One pipette (20 cm³/25 cm³), however all candidates in a centre must use pipettes of the same volume
(c) The usual apparatus and reagents for qualitative work including:
(i) Dilute sodium hydroxide solution
(ii) Dilute ammonia solution
(iii) Dilute hydrochloric acid
(iv) Dilute trioxonitrate (V) acid
(v) Distilled water
(vi) Red and blue litmus papers
(vii) Barium chloride solution
(viii) Potassium heptaoxomanganate (VII)
(ix) Phenolphthalein
(x) Five test tubes
(xi) Methyl orange
(xii) One boiling tube
(xiii) Filtration apparatus
Materials Preparation
3. Each candidate should be supplied with the following: Aₙ, Bₙ, Cₙ, and Dₙ, where n is the candidate’s serial number.
(a). 150 cm³ of trioxonitrate (V) acid solution in a bottle labelled Aₙ.
The solution, which should be the same for all candidates, will contain 6.30 cm³ of concentrated trioxonitrate (V) per dm³ of solution.
(b). 150 cm³ of a mixture of sodium trioxocarbonate (IV) and sodium trioxonitrate (V) in a bottle labelled Bₙ.
The solution, which should be the same for all candidates, will contain 5.5 g of sodium trioxocarbonate (IV) and 2.5 g of sodium trioxonitrate (V) per dm³ of solution.
(c). One spatulaful of lead (II) trioxonitrate (V) salt in a specimen bottle labelled Cₙ.
(d). One spatulaful of potassium trioxosulphate (IV) salt in a specimen bottle labelled Dₙ.
4. In all cases, more materials may be given if required.
5. The actual concentrations of A and B must be stated on the Subject Teacher’s Report Form, while the candidates should make use of the concentrations stated in the question paper.
6. Please, do not substitute any substance or solution for those specified in the instructions.
Arrangement And Serial Numbers Of Candidates
7. The place for work by candidates in the laboratory should be numbered serially and the candidates allotted these places strictly in order of their examination numbers.
8. The number of every specimen supplied to each candidate should tally with his/her serial number. If a candidate is absent, his/her serial number must not be allotted to another candidate.
9. If candidates are grouped into sets, the serial number 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 examination numbers on the front of their answer booklets at the beginning of the examination.
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Teacher’s Report
11. Ensure that a completed Teacher’s Report Form is enclosed in each envelope of scripts. This report form is provided separately.
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