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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 21:

Which of the following is a deliquescent compound?

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A Na₂CO₃
B CaCl₂
C CuO
D Na₂CO₃.10H₂O

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Question 22:

A chemical reaction which the hydration energy is greater than the lattice energy is referred to as

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A A spontaneous reaction
B An endothermic reaction
C An exothermic reaction
D A reversible reaction

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Question 23:

The function of zinc electrode in a galvanic cells is that it

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A Undergoes reduction
B Serves as the positive electrode
C Production of electons
D Uses up electrons

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Question 24:

CH_4(g) + Cl_2(g) â†’ CH₃ Cl_(s) + HCl_(g)
The major factor that influence the rate of the reaction above is

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A Catalyst
B Temperature
C Concentration
D Light

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Question 25:

The condition required for corrosion to take place is the presence of

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A Water and carbon (IV) oxide
B Water, carbon (IV) oxide and oxygen
C Oxygen and carbon (IV) oxide
D Water and oxygen

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