Jamb Chemistry 2011 Past Questions and Answers

Question 21:

• JAMB 2011

Which of the following is a deliquescent compound?

A. Na₂CO₃
B. CaCl₂
C. CuO
D. Na₂CO₃.10H₂O

Question 22:

• JAMB 2011

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

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

Question 23:

• JAMB 2011

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

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

Question 24:

• JAMB 2011

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

A. Catalyst
B. Temperature
C. Concentration
D. Light

Question 25:

• JAMB 2011

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

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