Jamb Chemistry Past Questions and Answers

Question 1916:

• JAMB 2017

Temporary hard water is formed when rain water containing dissolved carbon(IV) oxide flows over deposits of

A. CaCO₃
B. Na₂CO₃
C. Na₂SO₄
D. CaSO₄

Question 1917:

• JAMB 2017

The acid anhydride that will produce weak acid in water is

A. SO₃
B. NO₂
C. SO₂
D. CO₂

Question 1918:

• JAMB 2017

The process that occurs when two equivalent forms of a compound are in equilibrium is

A. Isotopy
B. Resonance
C. Isomerism
D. Reforming

Question 1919:

• JAMB 2017

In the laboratory preparation of ethyl ethanoate, the water present in the mixture is removed using a solution of

A. An hydrous CaCl₄
B. Concentrated NaCO₄
C. Dilute NaOH
D. Concentrated H₂SO₄

Question 1920:

• JAMB 2017

The constituent of air necessary in the rusting process are

A. O₂ and H₂O
B. Ar and CO₂
C. CO₂ and H₂O
D. O₂ and CO₂