Jamb Chemistry Past Questions and Answers

Question 2011:

• JAMB 2018

Calculate the pH of 0.05 moldm\(^{-3}\) H\(_2\)SO\(_4\)

A. 1.30
B. 1.12
C. 1.00
D. 0.30

Question 2012:

• JAMB 2018

The choice of method for extracting a metal from its ores depends on the

A. Strength of the core
B. Position of the metal in the electrochemical series
C. Source of the core
D. Position of the metal in the periodic table

Question 2013:

• JAMB 2018

At what temperature is the solubility of potassium trioxonitrate(V ) equal to that of sodium trioxonitrate (V)?

A. 0\(^o\)c
B. 30\(^o\)c
C. 40\(^o\)c
D. 45\(^o\)c

Question 2014:

• JAMB 2018

Which of the following produces relatively few ions in solution?

A. NaOH
B. Ca(OH)\(_2\)
C. KOH
D. AI(OH)\(_3\)

Question 2015:

• JAMB 2018

The figure above shows the electrolysis of molten sodium chloride. Z is the

A. Anode where the Cl\(^-\) ions are oxidized
B. Cathode where the Cl\(^-\) ions are reduced
C. Anode where the Na\(^+\) ions are reduced
D. Cathode where the Na\(^+\) ions are oxidized