Jamb Chemistry 1986 Past Questions and Answers

Question 1:

• JAMB 1986

Which of the following salts when dissolved in water will NOT give the corresponding pH value?

A. NaHSO₄, pH < 5
B. Na₂CO₃, pH > 8
C. Na₂Cl,pH = 7
D. NaHCO, pH < 6

Question 2:

• JAMB 1986

Which of the following salts when dissolved in water will NOT give the corresponding pH value?

A. NaHSO₄, pH < 5
B. Na₂CO₃, pH > 8
C. Na₂Cl,pH = 7
D. NaHCO, pH < 6

Question 3:

• JAMB 1986

Which of the following is an acidic salt?

A. NaHSO₄
B. Na₂SO₄
C. CH₃CO₂Na
D. Na₂S

Question 4:

• JAMB 1986

Which of the following solutions will conduct the least amount of electricity?

A. 2.00 M aqueous solution of NaOH
B. 0.01 M aqueous solution of NaOH
C. 0.01 M aqueous solution of hexanoic acid
D. 0.01 M aqueous solution of sugar

Question 5:

• JAMB 1986

How many coulombs of electricity are passed through a solution in which 6.5 amperes are allowed to run for 1.0 hour?

A. 3.90 x 10² coulombs
B. 5.50 x 10³ coulombs
C. 6.54 x 10³ coulombs
D. 2.34 x 10⁴ coulombs