NECO Chemistry Practical 2023 Specimen (LASU Chemistry Questions and Answers 2023)

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NECO Chemistry Specimen 2023

2023 NECO Chemistry practical specimen Questions 2023 has been officially released here. All Neco candidates should kindly study this 2023 NECO CHEMISTRY PRACTICAL SPECIMEN.

Proper usage of this material will guarantee you sure insights on the kind of NECO questions for chemistry 2023 that you should expect and how to draft expo answers for them.

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NECO CHEMISTRY PRACTICAL 2023

QUESTIONS ARE LISTED BELOW
INSTRUCTION(S) TO SCHOOL

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 (50cm3)
   (b) One Pipette (20cm3 or 25cm3)
   However, all candidates in a centre must use pipettes of the same volume
   (c) The usual apparatus for filtration
   (d) The usual apparatus and reagent for qualitative work including:
   (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 be supplied with the following: where ‘n’ is the candidate’s serial number

(a) 150 cm3 of tetraoxosulphate (VI) solution in a corked flask or bottle 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 ofbsodium 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. In all cases, more materials may be given if required.
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, do not substitute any substance or solution for those specified in these instructions.

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 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 registration numbers on the front page of their answer booklets at the beginning of the examination.

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.