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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 1:

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

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

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Question 2:

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

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

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Question 3:

Which of the following is an acidic salt?

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A NaHSO₄
B Na₂SO₄
C CH₃CO₂Na
D Na₂S

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Question 4:

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

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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

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Question 5:

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

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

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