Jamb Chemistry 2011 Past Questions and Answers

Question 16:

• JAMB 2011

N₂O_4(g) ↔ 2NO_2(g) ΔH = +ve
In the reaction above, an increase in temperature will

A. Increase the value of the equilibrium constant
B. Decreases the value of the equilibrium constant
C. Increase in the reactant production
D. Shift the equilibrium to the left

Question 17:

• JAMB 2011

CH₃COOH_(aq) + OH^-_(aq) ↔ CH₃COO^-_(aq) + H₂O_(l)
In the reaction above ,CH₃COO^-_(aq) is

A. Conjugate base
B. Acid
C. Base
D. Conjugate acid

Question 18:

• JAMB 2011

How many cations will be produced from a solution of potassium aluminium tetraoxosulphate (VI)?

A. 3
B. 4
C. 1
D. 2

Question 19:

• JAMB 2011

Which of the following is NOT an alkali?

A. NH₃
B. Mg(OH)₂
C. Ca(OH)₂
D. NaOH

Question 20:

• JAMB 2011

An effect of thermal pollution on water bodies is that the

A. Volume of water reduces
B. Volume of chemical waste increase
C. Level of oxides of nitrogen increase
D. Level of oxygen reduces