Jamb Chemistry 2018 Past Questions and Answers

Question 56:

• 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 57:

• 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

Question 58:

• JAMB 2018

The knowledge of half-life can be used to

A. Create an element
B. Detect an element
C. Split an element
D. Irradiate an element

Question 59:

• JAMB 2018

An element X forms the following compounds with chlorine; XCl\(_4\), XCl\(_3\), XCl\(_2\). This illustrates the

A. Law of multiple proportions
B. Law of chemical proportions
C. Law of simple proportions
D. Law of conservation of mass

Question 60:

• JAMB 2018

The hydrogen ion concentration of a sample of orange juice is 2.0 X 10\(^{-11}\)moldm\(^{-3}\). What is its p\(^{OH}\)? [log102 = 0.3010]

A. 3.30
B. 13.00
C. 10.70
D. 11.30