Jamb Chemistry 2017 Past Questions and Answers

Question 6:

• JAMB 2017

The tincture of iodine means iodine dissolved in

A. Ethanol
B. Bromine chloride
C. Chlorine water
D. Water

Question 7:

• 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 8:

• JAMB 2017

The acid anhydride that will produce weak acid in water is

A. SO₃
B. NO₂
C. SO₂
D. CO₂

Question 9:

• 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 10:

• 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