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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 821:

The main difference between a primary cell and a secondary cell is that the primary cell

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A Is an electrolytic cell but the secondary is not
B Cannot be recharged but the secondary cell can
C Can be recharged but the secondary cell cannot
D Contains electrodes but the secondary cell does not

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Question 822:

Determine the mass of copper deposited by 4.0 moles of electrons in the reaction represented by the equation below: Cu²_(aq) + 2e^- â†’ Cu_(s)

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A 32
B 64
C 128
D 256

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Question 823:

Reaction undergone by compounds with the general formula C_n H_2n+2 include

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A Addition
B Esterification
C Substitution
D Dehydration

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Question 824:

What is the major product formed when C₂H₅OH reacts with CH₃COOH?

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A C₂H₅COOCH₃
B C₂HCOCH₃
C CH₃COOC₂H₅
D C₃H₇COOH

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Question 825:

Which of the following substances is a non-reducing sugar?

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A Sucrose
B Glucose
C Fructose
D Maltose

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