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Waec 2019 Practical Chemistry Questions and Answers | May/June Exam is Out

Waec 2019 Practical Chemistry Questions and Answers | May/June Exam is Out 



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SUBSCRIBE FOR UR 2019 WAEC CHEMISTRY PRACTICAL EXPO
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2019 WAEC PRACTICAL CHEMISTRY  Question and Answers | May/June Exam is Available here 
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1. Great care should be ensured that the information given in items 2 and 3 below does not reach candidates either directly or indirectly before the examination

2. In addition to the fittings and reagents normally contained in a chemistry laboratory,  the following apparatus and materials will be required by each candidates 

(a) one burette of 50cm³ capacity 

(b) one pipette either 20cm³ or 25cm³. All candidates at one centre must use pipette of the same volume. 

(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) barium chloride 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 tests tube

(j) starch solution as indicator

(k) mathematical table calculator 

(l) wash bottle containing distilled/deionized water


3. Each candidates should be supplied with the following where N is the candidates serial number 

(a) 150cm³ of sodium trioxosulphate sulphate (VI) solution in a corked flask or bottle labelled. !AN!. These should all be the same containing 6.0g of Na2S203 per dm³ of solution 

(b) one spatulaful of a uniform mixture of NaCL and CuCO3 in a specimen bottle labelled 'Cn'.  The component of the mixture should be in the ratio of 1:2 by mass. 


*FREEDOM'S TEAM* 

4. In all cases, all more materials may be issued if required 

5. The actual concentration of A and B must be stated on the supervisors report form. The candidate will assure that the concentration are exactly as stated in the question paper

6. It should be noted that schools are not allowed to ammend  the information provided on the question paper or substitute any substance or solution for those specified in these instructions 

*ARRANGEMENTS AND SERIAL NUMBERS OF CANDIDATES*


7. the laboratory places should be  Numbered serially and the candidate should be alloted

8. If candidate is absent his/her serial number should not be allowed to other candidates 

9. If the candidate are divided into a number of sets, the serial numbers should be continued through the sets, so that no serial number is repeated.


Click on the link below to view the answers 

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