2021 WAEC Chemistry Practical, Candidate’s Weakness And Improvements

2021 WAEC Chemistry Practical, Candidate’s Weakness And Improvements

2021 WAEC Chemistry Practical Candidates’ Weakness and Suggested Remedies

Candidates

  • did not show basic understanding of simple concepts in Chemistry;

 

  • did not adhere to instructions as they relate to each question;

 

  • exhibited poor communication skill;

 

  • could not correctly define fermentation reaction;

 

  • wrote the formula of acid instead of name;

 

  • could not draw the graphical illustration of Charles’ law correctly;

 

  • could not write complete definition when required;

 

  • could not explain the chemistry behind the rate of corrosion of tin coated plate and a galvanized plate;

 

  • could not name two factors which determine the choice of an indicator for an acid-base titration;

 

  • could not draw and label a diagram for the laboratory preparation of a dry sample of sulphur(IV)oxide.

 

The Following Remedies Were Suggested For Overcoming The Weaknesses

Candidates should:

  • identify the basic requirements of each question before answering;

 

  • learn to use the appropriate technical terms when required;

 

  • improve on their communication skills;

 

  • write correct and complete definitions when required;

 

  • be familiar with the examination syllabus;

 

  • learn how to write and balance chemical equations correctly;

 

  • learn how to write IUPAC names of compounds correctly;

 

  • improve on their study habit.

Candidate’s Strength

Candidates

  • correctly named the catalyst used for fermentation;

 

  • gave the names of heavy chemicals;

 

  • listed properties of aluminium;

 

  • correctly defined esterification reaction;

 

  • mentioned the uses of alkyl alkanoates;

 

  • named ore of iron;

 

  • described acidic reaction on litmus paper;

 

  • gave two disadvantages of hardness in water;

 

  • correctly wrote the equation of reaction of calcium oxide with water;

 

  • correctly stated Dalton’s Law of Partial Pressure;

 

  • correctly used collision theory to explain the effect of temperature.

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